案例:CSS3 案例     状态:可编辑再运行    进入竖版
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<!DOCTYPE html>
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<html>
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<head>
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<style> 
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div
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{
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width:100px;
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height:50px;
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background:red;
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color:white;
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font-weight:bold;
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transition:width 2s;
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-moz-transition:width 2s; /* Firefox 4 */
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-webkit-transition:width 2s; /* Safari and Chrome */
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-o-transition:width 2s; /* Opera */
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}
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#div1 {transition-timing-function: linear;}
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#div2 {transition-timing-function: ease;}
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#div3 {transition-timing-function: ease-in;}
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#div4 {transition-timing-function: ease-out;}
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#div5 {transition-timing-function: ease-in-out;}
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/* Firefox 4: */
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#div1 {-moz-transition-timing-function: linear;}
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#div2 {-moz-transition-timing-function: ease;}
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#div3 {-moz-transition-timing-function: ease-in;}
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#div4 {-moz-transition-timing-function: ease-out;}
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#div5 {-moz-transition-timing-function: ease-in-out;}
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/* Safari and Chrome: */
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#div1 {-webkit-transition-timing-function: linear;}
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#div2 {-webkit-transition-timing-function: ease;}
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#div3 {-webkit-transition-timing-function: ease-in;}
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#div4 {-webkit-transition-timing-function: ease-out;}
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#div5 {-webkit-transition-timing-function: ease-in-out;}
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/* Opera: */
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#div1 {-o-transition-timing-function: linear;}
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#div2 {-o-transition-timing-function: ease;}
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#div3 {-o-transition-timing-function: ease-in;}
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#div4 {-o-transition-timing-function: ease-out;}
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#div5 {-o-transition-timing-function: ease-in-out;}
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div:hover
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{
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width:300px;
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}