x
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<style>
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table {
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border-collapse: collapse;
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border-spacing: 0px;
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}
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table,
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th,
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td {
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padding: 5px;
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border: 1px solid black;
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}
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</style>
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<p>带有 <code>colgroup</code> 和 <code>col</code> 的表格</p>
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<table>
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<colgroup>
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<col style="background-color: #0f0">
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<col span="2">
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</colgroup>
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<tr>
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<th>青柠</th>
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<th>柠檬</th>
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<th>橙子</th>
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</tr>
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<tr>
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<td>绿色</td>
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<td>黄色</td>
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<td>橙色</td>
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</tr>
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</table>
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