在线演示地址如下：
http://demo.jb51.net/js/2015/css-tab-bq-style-cha-codes/
<!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_Tab简洁版</title>
<style type="text/css">
body{margin:0; font-size:12px; background:#666;}
#box{width:400px; height:300px; margin:100px auto 0;}
#tab_nav{margin:0; padding:0; height:25px; line-height:24px;}
#tab_nav li{float:left; margin:0 3px; list-style:none; border:1px solid #999; border-bottom:none; height:24px; width:60px; text-align:center; background:#FFF;}
a{font:bold 14px/24px "微软雅黑", Verdana, Arial, Helvetica, sans-serif; color:green; text-decoration:none;}
a:hover{color:red;}
#tab_content{width:398px; height:273px; border:1px solid #999; font:bold 4em/273px "微软雅黑", Verdana, Arial, Helvetica, sans-serif; text-align:center; background:#FFF; overflow:hidden;}
#t_1,#t_2,#t_3{width:100%; height:273px;}
</style>
</head>
<body>
<div id="box">
<ul id="tab_nav">
<li><a href="#t_1">tab_1</a></li>
<li><a href="#t_2">tab_2</a></li>
<li><a href="#t_3">tab_3</a></li>
</ul>
<div id="tab_content">
<div id="t_1">tab_壹</div>
<div id="t_2">tab_贰</div>
<div id="t_3">tab_叁</div>
</div>
</div>
</body>
</html>