案例:CSS案例     状态:可编辑再运行    进入横版
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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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a:link,a:visited
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{
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display:block;
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font-weight:bold;
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font-size:14px;
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font-family:Verdana, Arial, Helvetica, sans-serif;
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color:#FFFFFF;
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background-color:#98bf21;
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width:120px;
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text-align:center;
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padding:4px;
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text-decoration:none;
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}
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a:hover,a:active
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{
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background-color:#7A991A;
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}
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</style>
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</head>

 运行结果 
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