<table border="1" cellspacing="300" cellpadding="100"> 
  <tr> 
    <th>Month</th> 
    <th>Savings</th> 
  </tr> 
  <tr> 
    <td>January</td> 
    <td>$100</td> 
  </tr> 
</table>

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cellpadding是边框到内容的距离

cellspacing是最外边框到单元格的距离