好吧，经过一些（更多）玩弄并添加了一些Javascript，我得到了解决方案-droid设备未使用我认为是的分辨率：
<html><head> <title>orientation and device detection in css3</title> <link rel="stylesheet" media="all and (max-device-width: 480px) and (orientation:portrait)" href="iphone-portrait.css" /> <link rel="stylesheet" media="all and (max-device-width: 480px) and (orientation:landscape)" href="iphone-landscape.css" /> <link rel="stylesheet" media="all and (device-width: 768px) and (device-height: 1024px) and (orientation:portrait)" href="ipad-portrait.css" /> <link rel="stylesheet" media="all and (device-width: 768px) and (device-height: 1024px) and (orientation:landscape)" href="ipad-landscape.css" /> <link rel="stylesheet" media="all and (device-width: 800px) and (device-height: 1184px) and (orientation:portrait)" href="htcdesire-portrait.css" /> <link rel="stylesheet" media="all and (device-width: 800px) and (device-height: 390px) and (orientation:landscape)" href="htcdesire-landscape.css" /> <link rel="stylesheet" media="all and (min-device-width: 1025px)" href="desktop.css" /></head><body> <div id="iphonelandscape">iphone landscape</div> <div id="iphoneportrait">iphone portrait</div> <div id="ipadlandscape">ipad landscape</div> <div id="ipadportrait">ipad portrait</div> <div id="htcdesirelandscape">htc desire landscape</div> <div id="htcdesireportrait">htc desire portrait</div> <div id="desktop">desktop</div> <script type="text/javascript"> function res() { document.write(screen.width + ', ' + screen.height); } res(); </script></body></html>
