Use CSS:
td { padding: 0;}
For detailed control on each side, use:
td {
padding-left: 1em;
padding-right: 2em;
padding-top: 0.3em;
padding-bottom: 10em; }
For different settings for different types, use classes:
td.leftmost { }
HTML:
<td> class="leftmost"</td>
—SA