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1.<link rel="stylesheet" media="(device-height: 480px) and (-webkit-min-device-pixel-ratio:2)" href="iphone4.css" /> 2.<link rel="stylesheet" media="(device-height: 568px)and (-webkit-min-device-pixel-ratio:2)" href="iphone5.css" /> 3.<link rel="stylesheet" media="all and (orientation:portrait)" href="portrait.css"> // 竖放样式 4.<link rel="stylesheet" media="all and (orientation:landscape)"href="landscape.css"> // 横放样式
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原文地址：http://www.cnblogs.com/camillea/p/respond_head_link.html
