随着智能手机、平板电脑越来越流行,许多网站都开始考虑为这些移动设备开发一套专属布局和样式。幸好 CSS3 提供了针对不同设备的查询规则,让这一目的变得非常容易实现。
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<style type= "text/css" > /* 说明:CSS3 为不同媒介设置样式的方式(CSS3 Media Queries) 来源:http://www.stuffandnonsense.co.uk/blog/about/hardboiled_css3_media_queries/ 整理:CodeBit.cn [ http://www.codebit.cn ] */ /* 智能手机 (纵向 和 横向) ----------- */ @media only screen and (min-device-width : 320px ) and (max-device-width : 480px ) { /* Styles */ } /* 智能手机 (横向) ----------- */ @media only screen and (min-width : 321px ) { /* Styles */ } /* 智能手机 (纵向) ----------- */ @media only screen and (max-width : 320px ) { /* Styles */ } /* iPad 系列 (纵向 和 横向) ----------- */ @media only screen and (min-device-width : 768px ) and (max-device-width : 1024px ) { /* Styles */ } /* iPad 系列 (横向) ----------- */ @media only screen and (min-device-width : 768px ) and (max-device-width : 1024px ) and (orientation : landscape ) { /* Styles */ } /* iPad 系列 (纵向) ----------- */ @media only screen and (min-device-width : 768px ) and (max-device-width : 1024px ) and (orientation : portrait ) { /* Styles */ } /* 台式机 和 笔记本 ----------- */ @media only screen and (min-width : 1224px ) { /* Styles */ } /* 大屏幕 ----------- */ @media only screen and (min-width : 1824px ) { /* Styles */ } /* iPhone 4 ----------- */ @media only screen and (-webkit-min-device-pixel-ratio : 1.5 ), only screen and (min-device-pixel-ratio : 1.5 ) { /* Styles */ } </style> |
当然,将所有样式放在一起不是一个好主意,你可以将不同设备特定的 CSS 放到不同文件中,然后再通过 link 节点的 media 属性来加载:
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< head > < link rel = "stylesheet" href = "smartphone.css" media="only screen and (min-device-width : 320px) and (max-device-width : 480px)"> < link rel = "stylesheet" href = "smartphone-landscape.css" media = "only screen and (min-width : 321px)" > < link rel = "stylesheet" href = "smartphone-portrait.css" media = "only screen and (max-width : 320px)" > < link rel = "stylesheet" href = "ipad.css" media="only screen and (min-device-width : 768px) and (max-device-width : 1024px)"> < link rel = "stylesheet" href = "ipad-landscape.css" media="only screen and (min-device-width : 768px) and (max-device-width : 1024px) and (orientation : landscape)"> < link rel = "stylesheet" href = "ipad-portrait.css" media="only screen and (min-device-width : 768px) and (max-device-width : 1024px) and (orientation : portrait)"> < link rel = "stylesheet" href = "widescreen.css" media = "only screen and (min-width : 1824px)" > < link rel = "stylesheet" href = "iphone4.css" media="only screen and (-webkit-min-device-pixel-ratio : 1.5), only screen and (min-device-pixel-ratio : 1.5)"> </ head > |