<style type="text/css">
body{ margin:0; padding:0; font-size:30px; color:#fff}
.top{background:#ccc;}
.main{background-color:red;}
.left{width:200px; height:400px; background:blue;}
.right{height:400px;float:right;background:green;}
.foot{margin:0;background:orange;}
</style>
