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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=" 100%;height: 708px">
<div style="background: green; 100%;height: 10%">头部</div>
<div style="background: #f8f8f8; 20%;height: 80%;float: left;">导航栏</div>
<div style="background: #f0f0f0; 80%;height: 80%;float: left;">我是ifrmae框架</div>
<div style="background: red; 100%;height: 10%;clear: left">尾部</div>
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</body>
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