其实主要是利用position定位功能，例子：
<style>.div{width:20%margin:auto border:1px solid redpadding:20px position:relativemargin-top:100px}
h3{ position:absolutetop:-40pxleft:30pxbackground:whitepadding:10px}
</style>
<div class="div">
<h3>描述</h3>
<p>这是测试线框</p>
</div>
<style>.line{height:1pxwidth:100%overflow:hiddenbackground-color:#fffborder-top:1px solid #ddd}
</style>
<p class="line"></p>
line的背景颜色和border颜色你自己定义就可以了。
<!DOCTYPE html><html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
.demo{
width:200px
height:10px
background:-webkit-linear-gradient(left, rgb(80,80,255,0.2) , #fff) /* Safari 5.1 - 6.0 */
background: -o-linear-gradient(left, rgb(80,80,255,0.2) , #fff)/* Opera 11.1 - 12.0 */
background: -moz-linear-gradient(left, rgb(80,80,255,0.2) , #fff)/* Firefox 3.6 - 15 */
background: linear-gradient(to left, rgb(80,80,255,0.2) , #fff)/* 标准的语法 */
}
</style>
</head>
<body>
<div class="demo" ></div>
</body>
</html>
