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<head>
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<title>all a</title>
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<div style="width:200px; height:99.5%; background-color: #999;">
<div style="width:200px; height:250px; background:#b2b2b2; border:1px solid red;">
<a href="www.baidu.com">baidu</a>
<a href="www.baidu.com">baidu</a>
<a href="www.baidu.com">baidu</a>
<a href="www.baidu.com">baidu</a>
<a href="www.baidu.com">baidu</a>
</div>
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aaaaaaaaaaaaaaaa
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<div style="width:100%; height:60px; background:blue; color:#fff;">
content
</div>
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aaaaaaaaaaaaaaaa
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