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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" />
<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />
<title>zh_cs</title>
<meta name="keywords" content="" />
<meta name="description" content="" />
<style type="text/css">
img{ border:0}
body{margin:0 auto; font-size:12px; font-family:Arial, Helvetica, sans-serif; text-align:center;}
.wrapper{width:1016px; margin:0 auto; background:url(images/body_bg.jpg) top center repeat-y;}
.top{width:1000px; height:31px; background:url(images/top_bg.jpg); margin:0 auto;}
.top ul{list-style:none; margin:0px 30px 0px 0px; padding:0px;overflow:auto;zoom:1;}
.top ul li{float:right;list-style:none;}
.top ul li a{display:block;width:100px;height:31px;text-indent:-9999px;background:url(images/lx.jpg) 0 center no-repeat;}
.top ul li .sc{ background-image:url(images/sc.jpg)}
</style>
</head>
<body>
<div class="wrapper">
<div class="top">
<ul>
<li><a href="#" class="sc">收藏本站</a></li>
<li><a href="#" class="lx">联系我们</a></li>
</ul>
</div>
</div>
</body>
</html>

使用图片背景居中的做法