案例:CSS3 案例     状态:可编辑再运行    进入横版
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<p><b>注释:</b>本例在 Internet Explorer 中无效。</p>
 
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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:100px;
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background:blue;
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transition-property:width;
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transition-duration:5s;
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transition-delay:2s;
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/* Firefox 4 */
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-moz-transition-property:width; 
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-moz-transition-duration:5s;
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-moz-transition-delay:2s;
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/* Safari and Chrome */
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-webkit-transition-property:width; 
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-webkit-transition-duration:5s;
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-webkit-transition-delay:2s;
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/* Opera */

 运行结果 
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