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<title>div布局-div与css搭配，不建议内部style方式</title>
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<div style="background: green;width: 100%;height: 10%">头部</div>
<div style="background: #f8f8f8;width: 20%;height: 80%;float: left;">导航栏</div>
<div style="background: #f0f0f0;width: 80%;height: 80%;float: left;">我是ifrmae框架</div>
<div style="background: red;width: 100%;height: 10%;clear: left">尾部</div>
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原文：http://www.cnblogs.com/houweidong/p/7497275.html