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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
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<div style="width:800px;height:600px;border:1px solid black">
<div style="width:800px;height:100px;border:1px solid black"><h1>这是上面的div</h1></div>
<div style="background-image:url(https://www.google.com.hk/images/srpr/logo11w.png);position:relative;top:-90px;left:0;width:800px;height:100px;border:1px solid black"></div>
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