row group html
<table>
<thead>
<tr>
<th> Name </th>
<th> Qty </th>
<th> Unit Price </th>
<th> Cost </th>
</tr>
</thead>
<tbody>
<tr>
<td> Pencil </td>
<td> 2 </td>
<td> 2.50 </td>
<td> 5.00 </td>
</tr>
<tr>
<td> Pen </td>
<td> 4 </td>
<td> 3.50 </td>
<td> 14.00 </td>
</tr>
</tbody>
<tfoot>
<tr>
<td colspan = "3"> Total </td>
<td> 19.00 </td>
</tr>
</tfoot>
</table>