程序代码：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.>
<html xmlns="http://www.>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>设计源http://www.</title>
<style>
body,div{ padding:0; margin:0;}
.clear{ clear:both;}
.top,.foot{ width:1003px; margin:0 auto 8px auto;}
.top,.foot{ height:100px; background:#D9D9D9; text-align:center; line-height:100px;}
.a1,.a21{ float:left;}
.a2,.a22{ float:right;}
.center{ padding:5px; width:991px; margin:0 auto 8px auto; overflow:hidden; border:1px solid #339999;}
.a1{ width:200px; border:1px solid #00CCFF; height:200px; line-height:200px;text-align:center; }
.a2{width:770px; border:1px solid #00CCFF; height:190px; line-height:190px; padding:5px;}
.a21,.a22{ width:48%; text-align:center; border:1px solid #CCCCCC;}
.a21{ background:#FFFF99;}
.a22{ background:#CCFFFF;}
</style>
</head>
<body>
<div class="top">顶部</div>
<div class="center">
<div class="a1">中左</div>
<div class="a2">
<div class="a21">中右左</div>
<div class="a22">中右右</div>
</div>
<div class="clear"></div>
</div>
<div class="foot">底部</div>
</body>
</html>
2010-12-08 10:56
不错
