下面这个，如果display:inline-block改成float:left，显示就对了。为什么？
<html>
<head>
<style>
div.panel{border:3px solid red;width:45%;height:500px;display:inline-block;margin-top:0px;}
</style>
</head>
<body>
<div class="panel">
<a href="#">show</a>
</div>
<div class="panel">
</div>
</body>
</html>
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FROM 68.135.50.*