案例：CSS3 案例     状态：可编辑再运行    进入横版
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<html>
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<head>
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<style type="text/css">
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table.one
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{
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table-layout: automatic
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}
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table.two
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{
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table-layout: fixed
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}
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</style>
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</head>
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<body>
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​
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<table class="one" border="1" width="100%">
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<tr>
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<td width="20%">1000000000000000000000000000</td>
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<td width="40%">10000000</td>
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<td width="40%">100</td>
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</tr>
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</table>
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​
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<br />

 运行结果　
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