下面的代码哪里错了,不能输出结果
<!doctype html>
<html>
<head>
<style>
*{margin:0;}
.warp{ background-color:red;margin:0 auto;width:960px;}
.header{width:100%; background-color:blue;}
.mainboby{ background-color:yellow;width:100%;
overflow:hidden;}
.left{width:300px; background-color:green;height:200px;float:left;}
.right{width:620px; background-color:black;height:200px;float:right;}
.footer{width:100%; background-color:#FF2F00;}
</style>
<meta charset="utf-8">
<title>无标题文档</title>
</head>
<body>
<div class="warp">
<div class="header">页眉</div>
<div class="mainboby">主体</div>
<div class="left">左</div>
<div class="right">右</div>
<div class="footer">页脚</div>
</div>
</body>
</html>