前端学习：学习笔记（CSS部分）
<h1 style="text-align: center">前端学习：学习笔记（CSS部分）</h1><p><span style="color: rgba(136, 136, 136, 1)"><strong><span style="color: rgba(136, 136, 136, 1)">CSS的学习总结<span style="color: rgba(255, 0, 0, 1)">(图解）</span></span></strong></span></p>
<h2 style="text-align: center">CSS的引入方式和书写规范</h2>
<h3>CSS的插入方式_内嵌样式</h3>
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<pre><span style="color: rgba(0, 0, 255, 1)"><!</span><span style="color: rgba(255, 0, 255, 1)">DOCTYPE html</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">html</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 128, 0, 1)"><!--</span><span style="color: rgba(0, 128, 0, 1)"> 插入CSS代码的第1种方式: 内嵌形式 </span><span style="color: rgba(0, 128, 0, 1)">--></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">="height: 300px;width: 300px;background-color: red;"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>我是DIV--1号<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>我是DIV--2号<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">html</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
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<h3>CSS的插入方式_内部样式</h3>
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<pre><span style="color: rgba(0, 0, 255, 1)"><!</span><span style="color: rgba(255, 0, 255, 1)">DOCTYPE html</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">html</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
div</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> red</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> yellow</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 128, 0, 1)"><!--</span><span style="color: rgba(0, 128, 0, 1)"> 插入CSS代码的第2种方式: 内部形式 </span><span style="color: rgba(0, 128, 0, 1)">--></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>我是DIV--1号<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>我是DIV--2号<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">html</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
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<h3>CSS的插入方式_外部样式</h3>
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<pre><span style="color: rgba(0, 0, 255, 1)"><!</span><span style="color: rgba(255, 0, 255, 1)">DOCTYPE html</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">html</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">link </span><span style="color: rgba(255, 0, 0, 1)">rel</span><span style="color: rgba(0, 0, 255, 1)">="stylesheet"</span><span style="color: rgba(255, 0, 0, 1)"> href</span><span style="color: rgba(0, 0, 255, 1)">="css/Demo1.css"</span> <span style="color: rgba(0, 0, 255, 1)">/></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 128, 0, 1)"><!--</span><span style="color: rgba(0, 128, 0, 1)"> 插入CSS代码的第3种方式: 外部形式 </span><span style="color: rgba(0, 128, 0, 1)">--></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>我是DIV--1号<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>我是DIV--2号<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">html</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
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<h4> Demo01.css</h4>
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<pre><span style="color: rgba(128, 0, 0, 1)">div</span>{<span style="color: rgba(255, 0, 0, 1)">
height</span>:<span style="color: rgba(0, 0, 255, 1)"> 500px</span>;<span style="color: rgba(255, 0, 0, 1)">
width</span>:<span style="color: rgba(0, 0, 255, 1)"> 500px</span>;<span style="color: rgba(255, 0, 0, 1)">
background-color</span>:<span style="color: rgba(0, 0, 255, 1)"> #FFFF00</span>;<span style="color: rgba(255, 0, 0, 1)">
color</span>:<span style="color: rgba(0, 0, 255, 1)"> black</span>;
}</pre>
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<h2 style="text-align: center">CSS选择器</h2>
<h3>CSS标签选择器</h3>
<div class="cnblogs_code"><img id="code_img_closed_f52372f6-61d7-4138-b566-2cd8ff223324" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_f52372f6-61d7-4138-b566-2cd8ff223324" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
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<pre><span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="utf-8"</span> <span style="color: rgba(0, 0, 255, 1)">/></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 128, 0, 1)"><!--</span><span style="color: rgba(0, 128, 0, 1)">
选择器的作用: 根据我们的项目需要,找到我们需要找到的某一些标签
选择器{
属性:属性值;==>键值对
属性:属性值;
属性:属性值;
属性:属性值;
}
</span><span style="color: rgba(0, 128, 0, 1)">--></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
div</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> red</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV1<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV2<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV3<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV4<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV5<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
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<h3>CSSid选择器</h3>
<div class="cnblogs_code"><img id="code_img_closed_6fcb1309-7e35-4ade-a32d-10971814b702" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_6fcb1309-7e35-4ade-a32d-10971814b702" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
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<pre> <span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d1</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 400px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 400px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> blue</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> red</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d1"</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV1<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV2<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV3<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV4<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV5<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
</pre>
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<h3>CSS类选择器</h3>
<div class="cnblogs_code"><img id="code_img_closed_8955f211-c707-4dee-a31c-e5b73aa1af5a" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_8955f211-c707-4dee-a31c-e5b73aa1af5a" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
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<pre> <span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
.clazz</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> red</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">class</span><span style="color: rgba(0, 0, 255, 1)">='clazz'</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV1<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">class</span><span style="color: rgba(0, 0, 255, 1)">='clazz'</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV2<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">class</span><span style="color: rgba(0, 0, 255, 1)">='clazz'</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV3<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV4<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV5<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
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<h3>同时使用多个选择器的情况</h3>
<div class="cnblogs_code"><img id="code_img_closed_ed6ee74e-ba3a-4753-baac-22059b81ed0a" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_ed6ee74e-ba3a-4753-baac-22059b81ed0a" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
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<pre> <span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
div</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> black</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
.clazz</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> yellow</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d1</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> red</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d1"</span><span style="color: rgba(255, 0, 0, 1)"> class</span><span style="color: rgba(0, 0, 255, 1)">="clazz"</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV1<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV2<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV3<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV4<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV5<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
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<h3>同时使用三种方式插入CSS代码</h3>
<div class="cnblogs_code"><img id="code_img_closed_45241a40-7c77-408d-af5f-2643e665365b" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_45241a40-7c77-408d-af5f-2643e665365b" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
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<pre> <span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
div</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 200px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 200px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> blue</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">link </span><span style="color: rgba(255, 0, 0, 1)">rel</span><span style="color: rgba(0, 0, 255, 1)">="stylesheet"</span><span style="color: rgba(255, 0, 0, 1)"> href</span><span style="color: rgba(0, 0, 255, 1)">="css/Demo05.css"</span> <span style="color: rgba(0, 0, 255, 1)">/></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">="height: 100px;width: 100px;background-color: red;"</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV1<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
</pre>
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<h4>同时使用三种方式插入CSS代码.css</h4>
<div class="cnblogs_code"><img id="code_img_closed_0e3f5c9a-2a50-41d4-a17d-4b541d21c916" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_0e3f5c9a-2a50-41d4-a17d-4b541d21c916" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
<div id="cnblogs_code_open_0e3f5c9a-2a50-41d4-a17d-4b541d21c916" class="cnblogs_code_hide">
<pre><span style="color: rgba(128, 0, 0, 1)">div</span>{<span style="color: rgba(255, 0, 0, 1)">
height</span>:<span style="color: rgba(0, 0, 255, 1)"> 300px</span>;<span style="color: rgba(255, 0, 0, 1)">
width</span>:<span style="color: rgba(0, 0, 255, 1)"> 300px</span>;<span style="color: rgba(255, 0, 0, 1)">
background-color</span>:<span style="color: rgba(0, 0, 255, 1)"> yellowgreen</span>;
}</pre>
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<h3>属性选择器</h3>
<div class="cnblogs_code"><img id="code_img_closed_31c0ef1c-3c31-4f56-99b7-319cab113270" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_31c0ef1c-3c31-4f56-99b7-319cab113270" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
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<pre> <span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
div</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> red</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
margin-bottom</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 10px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> red</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
div</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> yellow</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
div</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> blue</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">align</span><span style="color: rgba(0, 0, 255, 1)">="left"</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV1<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">align</span><span style="color: rgba(0, 0, 255, 1)">="left"</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV2<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">align</span><span style="color: rgba(0, 0, 255, 1)">="right"</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV3<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">align</span><span style="color: rgba(0, 0, 255, 1)">="right"</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV4<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">align</span><span style="color: rgba(0, 0, 255, 1)">="right"</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV5<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
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<h3>伪元素选择器</h3>
<div class="cnblogs_code"><img id="code_img_closed_9777957b-6c8c-4392-93d0-39361e6e3255" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_9777957b-6c8c-4392-93d0-39361e6e3255" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
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<pre> <span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
a</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
text-decoration</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> none</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
a:link</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> yellowgreen</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
a:hover</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> black</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
text-decoration</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> underline</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
a:active</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> darkgray</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
a:visited</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> darkblue</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">a </span><span style="color: rgba(255, 0, 0, 1)">href</span><span style="color: rgba(0, 0, 255, 1)">="#1"</span><span style="color: rgba(0, 0, 255, 1)">></span>百度一下<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">a</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">br</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">a </span><span style="color: rgba(255, 0, 0, 1)">href</span><span style="color: rgba(0, 0, 255, 1)">="#1"</span><span style="color: rgba(0, 0, 255, 1)">></span>百度一下<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">a</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">br</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">a </span><span style="color: rgba(255, 0, 0, 1)">href</span><span style="color: rgba(0, 0, 255, 1)">="#1"</span><span style="color: rgba(0, 0, 255, 1)">></span>百度一下<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">a</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">br</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">a </span><span style="color: rgba(255, 0, 0, 1)">href</span><span style="color: rgba(0, 0, 255, 1)">="#1"</span><span style="color: rgba(0, 0, 255, 1)">></span>百度一下<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">a</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">br</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">a </span><span style="color: rgba(255, 0, 0, 1)">href</span><span style="color: rgba(0, 0, 255, 1)">="#1"</span><span style="color: rgba(0, 0, 255, 1)">></span>百度一下<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">a</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">br</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">a </span><span style="color: rgba(255, 0, 0, 1)">href</span><span style="color: rgba(0, 0, 255, 1)">="http://www.baidu.com"</span><span style="color: rgba(0, 0, 255, 1)">></span>百度一下<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">a</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">br</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">h1</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
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<h3>层级选择器</h3>
<div class="cnblogs_code"><img id="code_img_closed_4104b417-26ef-4d49-bd8b-eebf96a9f5ec" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_4104b417-26ef-4d49-bd8b-eebf96a9f5ec" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
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<pre><span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d1 a</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> red</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">='d1'</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">a</span><span style="color: rgba(0, 0, 255, 1)">></span>百度一下<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">a</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">a</span><span style="color: rgba(0, 0, 255, 1)">></span>百度一下<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">a</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">a</span><span style="color: rgba(0, 0, 255, 1)">></span>百度一下<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">a</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">a</span><span style="color: rgba(0, 0, 255, 1)">></span>百度一下<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">a</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">a</span><span style="color: rgba(0, 0, 255, 1)">></span>百度一下<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">a</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
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<h2 style="text-align: center">CSS属性</h2>
<h3>CSS中的文本属性</h3>
<div class="cnblogs_code"><img id="code_img_closed_181db772-c9a6-4d59-802e-ea4b14341540" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_181db772-c9a6-4d59-802e-ea4b14341540" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
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<pre> <span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
body</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> yellowgreen</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
font-family</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> "微软雅黑"</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
font-size</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 50px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> red</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
text-decoration</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> none</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
text-align</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> right</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
font-weight</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> bold</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
line-height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 120px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
span</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> black</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="color: rgba(0, 0, 0, 1)">
HTML是世界上最好的编程语言.</span><span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">br</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="color: rgba(0, 0, 0, 1)">
HTML是世界上最好的编程语言.</span><span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">br</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="color: rgba(0, 0, 0, 1)">
HTML是世界上最好的编程语言.</span><span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">br</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
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<h3>CSS中的背景属性</h3>
<div class="cnblogs_code"><img id="code_img_closed_3a418a33-314b-4e03-bd6b-c5d107b40954" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_3a418a33-314b-4e03-bd6b-c5d107b40954" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
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<pre> <span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
body</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> red</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-image</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> url(img/tphot.jpg)</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-repeat</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> repeat-y</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
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<h3>CSS中的列表属性</h3>
<div class="cnblogs_code"><img id="code_img_closed_84987342-0ae4-4f5e-90ea-97493a8d6678" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_84987342-0ae4-4f5e-90ea-97493a8d6678" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
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<pre> <span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
ul li</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
list-style-type</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)">none</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
list-style-image</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)">url(img/tphot11.jpg)</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">ul</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">li</span><span style="color: rgba(0, 0, 255, 1)">></span>第1名<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">li</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">li</span><span style="color: rgba(0, 0, 255, 1)">></span>第2名<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">li</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">li</span><span style="color: rgba(0, 0, 255, 1)">></span>第3名<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">li</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">li</span><span style="color: rgba(0, 0, 255, 1)">></span>第4名<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">li</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">ul</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
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<h3>CSS中的显示属性</h3>
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<pre><span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
div</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> red</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
display</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> inline</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
ul li</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
list-style-type</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> none</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
display</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> inline</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
span</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> salmon</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">/*</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">display: block;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">*/</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">input </span><span style="color: rgba(255, 0, 0, 1)">type</span><span style="color: rgba(0, 0, 255, 1)">="text"</span> <span style="color: rgba(0, 0, 255, 1)">/></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="color: rgba(0, 0, 0, 1)">
DIV
</span><span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="color: rgba(0, 0, 0, 1)">
HTML
</span><span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">ul</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">li</span><span style="color: rgba(0, 0, 255, 1)">></span>第1名<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">li</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">li</span><span style="color: rgba(0, 0, 255, 1)">></span>第2名<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">li</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">li</span><span style="color: rgba(0, 0, 255, 1)">></span>第3名<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">li</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">li</span><span style="color: rgba(0, 0, 255, 1)">></span>第4名<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">li</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">ul</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="color: rgba(0, 0, 0, 1)">
我是一个块级标签
</span><span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="color: rgba(0, 0, 0, 1)">
xxxxxx
</span><span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
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<h3>CSS中的浮动属性</h3>
<div class="cnblogs_code"><img id="code_img_closed_cdb1b06f-173a-433c-b850-aeae5222bc8c" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_cdb1b06f-173a-433c-b850-aeae5222bc8c" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
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<pre><span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
div</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
font-size</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 30px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
font-weight</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 900</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> rosybrown</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d1</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> red</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
float</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> left</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d2</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> yellowgreen</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
float</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> left</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d3</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> black</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
float</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> right</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
.clear</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
clear</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> both</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d1"</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV1<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d2"</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV2<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d3"</span><span style="color: rgba(0, 0, 255, 1)">></span>DIV3<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">class</span><span style="color: rgba(0, 0, 255, 1)">="clear"</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
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<h3>练习：注册页面</h3>
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<pre><span style="color: rgba(0, 0, 255, 1)"><!</span><span style="color: rgba(255, 0, 255, 1)">DOCTYPE html</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">html</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#header</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 100px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 100%</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#content</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 700px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 60%</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">/*</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">设置页面居中</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">*/</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
margin</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> auto</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
border</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 2px solid black</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
.c1</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 30px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 100%</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> #F7F7F7</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
.c2</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 200px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 100%</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> white</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#c2-left</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 100%</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 30%</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
float</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> left</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
text-align</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> right</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#c2-left div</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 20%</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#c2-right</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
margin-left</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 20px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 100%</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 60%</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
float</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> left</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#c2-right div</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 20%</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
.clear</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
clear</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> both</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
.c6</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 120px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 100%</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> white</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#c6-zhuce </span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 40px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 250px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> red</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
text-align</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)">center</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
margin</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> auto</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#c6-zhucezi</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
padding</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 8px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
span</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> red</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="header"</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="content"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">class</span><span style="color: rgba(0, 0, 255, 1)">="c1"</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">strong</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">font</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="color: rgba(255, 0, 0, 1)">&nbsp;</span>账户信息<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">font</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">strong</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">class</span><span style="color: rgba(0, 0, 255, 1)">="c2"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="c2-left"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span>*<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span>用户名:<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span>*<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span>请输入密码:<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span>*<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span>请确认密码:<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="c2-right"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">input </span><span style="color: rgba(255, 0, 0, 1)">type</span><span style="color: rgba(0, 0, 255, 1)">="text"</span><span style="color: rgba(0, 0, 255, 1)">/></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">input </span><span style="color: rgba(255, 0, 0, 1)">type</span><span style="color: rgba(0, 0, 255, 1)">="password"</span><span style="color: rgba(0, 0, 255, 1)">/></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">input </span><span style="color: rgba(255, 0, 0, 1)">type</span><span style="color: rgba(0, 0, 255, 1)">="password"</span><span style="color: rgba(0, 0, 255, 1)">/></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">class</span><span style="color: rgba(0, 0, 255, 1)">="clear"</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">class</span><span style="color: rgba(0, 0, 255, 1)">="c1"</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">strong</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">font</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="color: rgba(255, 0, 0, 1)">&nbsp;</span>联系人信息<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">font</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">strong</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">class</span><span style="color: rgba(0, 0, 255, 1)">="c2"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="c2-left"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span>*<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span>联系人姓名:<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span>*<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span>所在部门:<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span>*<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span>固定电话:<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="c2-right"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">input </span><span style="color: rgba(255, 0, 0, 1)">type</span><span style="color: rgba(0, 0, 255, 1)">="text"</span><span style="color: rgba(0, 0, 255, 1)">/></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">select</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">option </span><span style="color: rgba(255, 0, 0, 1)">selected</span><span style="color: rgba(0, 0, 255, 1)">="selected"</span><span style="color: rgba(0, 0, 255, 1)">></span>请选择<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">option</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">option </span><span style="color: rgba(255, 0, 0, 1)">value</span><span style="color: rgba(0, 0, 255, 1)">="yjb"</span><span style="color: rgba(0, 0, 255, 1)">></span>研究部<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">option</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">option </span><span style="color: rgba(255, 0, 0, 1)">value</span><span style="color: rgba(0, 0, 255, 1)">="xzb"</span><span style="color: rgba(0, 0, 255, 1)">></span>行政部<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">option</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">option</span><span style="color: rgba(0, 0, 255, 1)">></span>人事部<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">option</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">option</span><span style="color: rgba(0, 0, 255, 1)">></span>市场部<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">option</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">select</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">input </span><span style="color: rgba(255, 0, 0, 1)">type</span><span style="color: rgba(0, 0, 255, 1)">="text"</span><span style="color: rgba(0, 0, 255, 1)">/></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">class</span><span style="color: rgba(0, 0, 255, 1)">="clear"</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">class</span><span style="color: rgba(0, 0, 255, 1)">="c1"</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">strong</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">font</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="color: rgba(255, 0, 0, 1)">&nbsp;</span>公司信息<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">font</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">strong</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">class</span><span style="color: rgba(0, 0, 255, 1)">="c6"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="c2-left"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span>*<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span>公司名称:<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span>*<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">span</span><span style="color: rgba(0, 0, 255, 1)">></span>购买类型/用途:<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="c2-right"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">><</span><span style="color: rgba(128, 0, 0, 1)">input </span><span style="color: rgba(255, 0, 0, 1)">type</span><span style="color: rgba(0, 0, 255, 1)">="text"</span><span style="color: rgba(0, 0, 255, 1)">/></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="color: rgba(0, 0, 0, 1)">
IT设备</span><span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">input </span><span style="color: rgba(255, 0, 0, 1)">type</span><span style="color: rgba(0, 0, 255, 1)">="checkbox"</span> <span style="color: rgba(0, 0, 255, 1)">/></span><span style="color: rgba(0, 0, 0, 1)">
IT设备</span><span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">input </span><span style="color: rgba(255, 0, 0, 1)">type</span><span style="color: rgba(0, 0, 255, 1)">="checkbox"</span> <span style="color: rgba(0, 0, 255, 1)">/></span><span style="color: rgba(0, 0, 0, 1)">
IT设备</span><span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">input </span><span style="color: rgba(255, 0, 0, 1)">type</span><span style="color: rgba(0, 0, 255, 1)">="checkbox"</span> <span style="color: rgba(0, 0, 255, 1)">/></span><span style="color: rgba(0, 0, 0, 1)">
IT设备</span><span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">input </span><span style="color: rgba(255, 0, 0, 1)">type</span><span style="color: rgba(0, 0, 255, 1)">="checkbox"</span> <span style="color: rgba(0, 0, 255, 1)">/></span><span style="color: rgba(0, 0, 0, 1)">
IT设备</span><span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">input </span><span style="color: rgba(255, 0, 0, 1)">type</span><span style="color: rgba(0, 0, 255, 1)">="checkbox"</span> <span style="color: rgba(0, 0, 255, 1)">/></span><span style="color: rgba(0, 0, 0, 1)">
IT设备</span><span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">input </span><span style="color: rgba(255, 0, 0, 1)">type</span><span style="color: rgba(0, 0, 255, 1)">="checkbox"</span><span style="color: rgba(255, 0, 0, 1)"> checked</span><span style="color: rgba(0, 0, 255, 1)">="checked"</span><span style="color: rgba(0, 0, 255, 1)">/></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">class</span><span style="color: rgba(0, 0, 255, 1)">="clear"</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="c6-zhuce"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="c6-zhucezi"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">font </span><span style="color: rgba(255, 0, 0, 1)">color</span><span style="color: rgba(0, 0, 255, 1)">="white"</span><span style="color: rgba(0, 0, 255, 1)">></span>立即注册 <span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">font</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">html</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
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<h2 style="text-align: center">CSS盒子模型</h2>
<h3>盒子模型</h3>
<div class="cnblogs_code"><img id="code_img_closed_09333879-6e2f-4213-81b7-759627c05c48" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_09333879-6e2f-4213-81b7-759627c05c48" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
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<pre> <span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#box</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> darkgreen</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">/*</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">上下左右</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">*/</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
padding</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 50px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">/*</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">上左右下</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">*/</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">/*</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">padding: 50px 100px 150px;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">*/</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">/*</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">padding: 50px 100px 150px 200px;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">*/</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
border</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 5px solid red</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#moon</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> yellow</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d1</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
border</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 5px dashed black</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d2</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
border</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 5px dotted black</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
div</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
margin-left</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 50px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
margin-bottom</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 100px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="box"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="moon"</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d1"</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d2"</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
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<h3>圆角边框</h3>
<div class="cnblogs_code"><img id="code_img_closed_d6b805c8-6bde-4841-8c2d-852c2fb657e3" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_d6b805c8-6bde-4841-8c2d-852c2fb657e3" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
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<pre><span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d1</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
border</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 5px solid red</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
margin</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> auto</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
margin-top</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 100px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">/*</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">border-radius: 50px;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">*/</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">/*</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">border-radius: 50px 100px 150px;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">*/</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d2</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
border</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 5px solid blue</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
border-radius</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 150px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d3</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 150px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
border</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 5px solid blue</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
border-radius</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px 300px 0px 0px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d4</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 150px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
border</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 5px solid greenyellow</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
border-radius</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 0px 0px 300px 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d5</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 150px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
border</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 5px solid greenyellow</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
border-radius</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px 0px 0px 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d6</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 150px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
border</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 5px solid greenyellow</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
border-radius</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 0px 300px 300px 0px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d7</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 150px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 150px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
border</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 5px solid greenyellow</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
border-radius</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 150px 0px 0px 0px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d8</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 150px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 150px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
border</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 5px solid greenyellow</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
border-radius</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 0px 150px 0px 0px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d1"</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d2"</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d3"</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d4"</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d5"</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d6"</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d7"</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d8"</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
</div>
<span class="cnblogs_code_collapse">View Code</span></div>
<h3>盒子阴影</h3>
<div class="cnblogs_code"><img id="code_img_closed_792e8480-f5b0-47a3-8299-81bc9fc1682d" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_792e8480-f5b0-47a3-8299-81bc9fc1682d" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
<div id="cnblogs_code_open_792e8480-f5b0-47a3-8299-81bc9fc1682d" class="cnblogs_code_hide">
<pre> <span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
div</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 500px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 500px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> salmon</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
box-shadow</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 0px 0px 30px yellowgreen</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
</div>
<span class="cnblogs_code_collapse">View Code</span></div>
<h2 style="text-align: center">CSS 的定位</h2>
<h3>相对定位</h3>
<div class="cnblogs_code"><img id="code_img_closed_0b1f2189-4fee-4907-8190-25d84e3ede6c" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_0b1f2189-4fee-4907-8190-25d84e3ede6c" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
<div id="cnblogs_code_open_0b1f2189-4fee-4907-8190-25d84e3ede6c" class="cnblogs_code_hide">
<pre><span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d1</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> greenyellow</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
margin-top</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 20px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">/*</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">设置相对定位</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">*/</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
position</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> relative</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
left</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 150px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">/*</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">right: 100px;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">*/</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
float</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> left</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">/*</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">top: 50px;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">*/</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
bottom</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 100px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d2</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> cornflowerblue</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
margin-top</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 20px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
float</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> left</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d1"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d2"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
</div>
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<h3>绝对定位</h3>
<div class="cnblogs_code"><img id="code_img_closed_95590fe2-bef4-40f4-8b80-0d72f69e5e15" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_95590fe2-bef4-40f4-8b80-0d72f69e5e15" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
<div id="cnblogs_code_open_95590fe2-bef4-40f4-8b80-0d72f69e5e15" class="cnblogs_code_hide">
<pre> <span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
div</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
margin-top</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 20px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
float</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> left</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d1</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> greenyellow</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d2</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> yellow</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">/*</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">设置成绝对定位</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">*/</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
position</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> absolute</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
left</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 100px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
top</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 500px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d3</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> red</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d1"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d2"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d3"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
</div>
<span class="cnblogs_code_collapse">View Code</span></div>
<h3>固定定位</h3>
<div class="cnblogs_code"><img id="code_img_closed_4ba06977-44b9-48d1-88a9-26b28dfae450" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_4ba06977-44b9-48d1-88a9-26b28dfae450" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
<div id="cnblogs_code_open_4ba06977-44b9-48d1-88a9-26b28dfae450" class="cnblogs_code_hide">
<pre><span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
body</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 5000px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
div</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 100px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 80%</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> greenyellow</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">/*</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">设置成固定定位</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 128, 0, 1)">*/</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
position</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> fixed</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
top</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)">300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d1"</span><span style="color: rgba(0, 0, 255, 1)">></span>我是一个广告~~~~~~~~~~~~~<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"></</span><span style="color: rgba(128, 0, 0, 1)">body</span><span style="color: rgba(0, 0, 255, 1)">></span></pre>
</div>
<span class="cnblogs_code_collapse">View Code</span></div>
<h3>z-index属性</h3>
<div class="cnblogs_code"><img id="code_img_closed_235ce40d-ad7f-4ef9-9e74-0b4565b11e8e" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_235ce40d-ad7f-4ef9-9e74-0b4565b11e8e" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
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<pre><span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">meta </span><span style="color: rgba(255, 0, 0, 1)">charset</span><span style="color: rgba(0, 0, 255, 1)">="UTF-8"</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">title</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">style</span><span style="color: rgba(0, 0, 255, 1)">></span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d1</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> red</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
float</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> left</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
position</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> relative</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
z-index</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 10</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d2</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> blue</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
float</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> left</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
margin-left</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> -200px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
margin-top</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 50px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
z-index</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 5</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
position</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> relative</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(128, 0, 0, 1)">
#d3</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> yellowgreen</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
float</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> left</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
margin-left</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> -200px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
margin-top</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 100px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
z-index</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 1</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
position</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> relative</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
<span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">}</span>
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<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d1"</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
<span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">div </span><span style="color: rgba(255, 0, 0, 1)">id</span><span style="color: rgba(0, 0, 255, 1)">="d2"</span><span style="color: rgba(0, 0, 255, 1)">></</span><span style="color: rgba(128, 0, 0, 1)">div</span><span style="color: rgba(0, 0, 255, 1)">></span>
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<h3>设置元素透明度</h3>
<div class="cnblogs_code"><img id="code_img_closed_a581137a-9883-40b9-8e59-c655c0bcb9f6" class="code_img_closed" src="https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif" alt=""><img id="code_img_opened_a581137a-9883-40b9-8e59-c655c0bcb9f6" class="code_img_opened" style="display: none" src="https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" alt="">
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<pre> <span style="color: rgba(0, 0, 255, 1)"><</span><span style="color: rgba(128, 0, 0, 1)">head</span><span style="color: rgba(0, 0, 255, 1)">></span>
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div</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">{</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
height</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
width</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 300px</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
background-color</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> blue</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(255, 0, 0, 1)">
opacity</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">:</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 255, 1)"> 0.1</span><span style="background-color: rgba(245, 245, 245, 1); color: rgba(0, 0, 0, 1)">;</span>
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DIV
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<p> </p>
</div>
<div id="MySignature" role="contentinfo">
<div><h3>愿路途漫长，以后莫失莫忘。 愿你不骄不躁，安稳顺心。</h3></div>
<div>归档：我的知识栈：目录(更新中...）</div>
<div>作者：菜鸟-传奇</div>
<div>
<b><font size="2" color="#808080">本文版权归作者和博客园共有，重在学习交流，不以任何盈利为目的，欢迎转载。
敲敲小黑板：《刑法》第二百八十五条 【非法侵入计算机信息系统罪；非法获取计算机信息系统数据、非法控制计算机信息系统罪】违反国家规定，侵入国家事务、国防建设、尖端科学技术领域的计算机信息系统的，处三年以下有期徒刑或者拘役。违反国家规定，侵入前款规定以外的计算机信息系统或者采用其他技术手段，获取该计算机信息系统中存储、处理或者传输的数据，或者对该计算机信息系统实施非法控制，情节严重的，处三年以下有期徒刑或者拘役，并处或者单处罚金；情节特别严重的，处三年以上七年以下有期徒刑，并处罚金。
</font></b></div><br><br>
来源：https://www.cnblogs.com/cainiao-chuanqi/p/11536154.html
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