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<meta name="author" type="Nancle from CAU CS101" />
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<title>如何让img标签在div里左右上下居中</title>
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<style type="text/css">
#container{width:400px; height:400px; background:#ccc; text-align:center;}
img{margin:100px auto 0 auto;}
</style>
</head>
<body>
<div id="container">
<img src="http://img.my.csdn.net/uploads/201207/14/1342258377_8375.png" width="200" height="200" />
</div>
<p>
</p>
</body>
</html>
原文：https://www.cnblogs.com/miaolyou/p/11170798.html