cellmargin, cellmargin-bottom, cellmargin-left, cellmargin-right, cellmargin-top attribute

The cellmargin set of attributes can be used on a table element to set the default margin value for each of it's td elements. It functions exactly the same way as margin.

<table cellmargin="20">
  <tr>
    <td>test</td>
  </tr>
</table>

<table>
  <tr>
    <td margin="20">test</td>
  </tr>
</table>