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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>CSS中的常用选择器</title>
<style type="text/css">
.div1{width:80px ; height:80px; background-color:#ccc;}
#div2{width:80px ; height:80px; background-color:pink;}
p{ background-color:green;}
p[id="divid"]{ background-color:red;}
.div3{width:80px ; height:80px; background-color:yellow;}
.div3 span{ background-color:#ff6700;}
h3:first-of-type{ background-color:lightblue;}
h3:last-of-type{background-color:lightgreen;}
h4:nth-child(4){ background-color:lightgreen;}
.div5{ background-color:#ccc;}
li:nth-of-type(3){ background:wheat;}
</style>
</head>
<body>
<div class="div1">
</div>
<div id="div2">
<p>我是P元素</p>
<p id="divid">我是P元素</p>
</div>
<div class="div3">
<span >1</span>
<span>2</span>
<span>3</span>
</div>
<h3>1</h3>
<h3>2</h3>
<h3>3</h3>
<div class="div4">
<h4>1</h4>
<h4>2</h4>
<h4>3</h4>
<h4>4</h4>
<h4>5</h4>
</div>
<div class="div5">
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
</ul>
</div>
</body>
</html>
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