看源码有什么错误吗?
<!DOCTYPE HTML>
<html>
<head>
<title>无标题文档</title>
<meta charset="utf-8">
<style type="text/css">
*{margin:0;padding:0;}
#wrap{background:#00c;margin:0 auto;width:960px;}
#header{background:#ff3300;width:100%;}
#mainbody{background:#fc0;width:100%;overflow:hidden;}
.left{width:800px;height:200px;background:#000;float:left;margin-right:20px;}
.right{width:140px;height:500px;background:#690;float:left;}
#footer{background:#639;width:100%;}
</style>
</head>
<body>
<div id="wrap">
<div id="header">头部</div>
<div id="mainbody">主题内容
<div class="left"></div>
<div class="right"></div>
</div>
<div id="footer">版权部分</div>
</div>
</body>
</html>
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