<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="Generator" content="EditPlus?">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<title>css类选择器</title>
<style type="text/css">
.tag01{color:red; border: 1px solid red;width: 300px;height: 200px;}
.tag02{list-style: none;}
</style>
</head>
<body>
<p class="tag01">我是段落</p>
<ul class="tag02">
<li class="tag01">我是列表1</li>
<li class="tag01">我是列表2</li>
</ul>
</body>
</html>
原文：http://www.cnblogs.com/caicai2480/p/6379845.html