案例:CSS案例     状态:可编辑再运行    进入竖版
 运行结果 
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html>
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<head>
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<style type="text/css">
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img[title~="Figure"]
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{
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border: 1px solid gray;
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}
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</style>
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</head>
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<body>
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<h1>可以应用样式:</h1>
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<img title="Figure 1" src="/img/figure-1.gif" />
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<img title="Figure 2" src="/img/figure-2.gif" />
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<hr />
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<h1>无法应用样式:</h1>
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<img src="/img/figure-1.gif" />
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<img src="/img/figure-2.gif" />
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</body>
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</html>
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