showdownjs/test/extensions/table/basic.html

<table>
<thead>
<tr>
<th id="first_header" style="text-align:left;"> First Header  </th>
<th id="second_header" style="text-align:left;"> Second Header </th>
</tr>
</thead>

<tbody>
<tr>
<td style="text-align:left;"> Row 1 Cell 1  </td>
<td style="text-align:left;"> Row 1 Cell 2  </td>
</tr>

<tr>
<td style="text-align:left;"> Row 2 Cell 1  </td>
<td style="text-align:left;"> Row 2 Cell 2  </td>
</tr>

</tbody>
</table>