利用CSS3新特性创建透明边框三角
<p>先来看一下效果，这在CSS3之前，完全是不可想象的，只有图片才能做的到，但在HTML5和CSS3大行其道的今天，实现这种效果，那都不是事啊。<br /></p>
<p><img alt="" src="https://img.jbzj.com/file_images/article/201603/2016326102923927.jpg" /></p>
<p>看一下实现的代码：</p>
<div class="jb51code">
<pre class="brush:xhtml;">
<!DOCTYPE html>
<html>
<head>
<style type='text/css'>
/* 上三角 */
.arrow-up {
width: 0;
height: 0;
border-left: 20px solid transparent;
border-right: 20px solid transparent;
border-bottom: 20px solid green;
}
/* 下三角 */
.arrow-down {
width: 0;
height: 0;
border-left: 20px solid transparent;
border-right: 20px solid transparent;
border-top: 20px solid orange;
}
/* 右三角 */
.arrow-right {
width: 0;
height: 0;
border-top: 60px solid transparent;
border-bottom: 60px solid transparent;
border-left: 60px solid blue;
}
/* 左三角 */
.arrow-left {
width: 0;
height: 0;
border-top: 10px solid transparent;
border-bottom: 10px solid transparent;
border-right: 10px solid silver;
}
</style>
</head>
<body>
<div class="arrow-up"></div>
<div class="arrow-down"></div>
<div class="arrow-left"></div>
<div class="arrow-right"></div>
</body>
</html></pre>
</div>
<p> </p>
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