row group html

1<table>
2  <thead>
3    <tr>
4      <th> Name </th>
5      <th> Qty </th>
6      <th> Unit Price </th>
7      <th> Cost </th>
8    </tr>
9  </thead>
10  <tbody>
11    <tr>
12      <td> Pencil </td>
13      <td> 2 </td>
14      <td> 2.50 </td>
15      <td> 5.00 </td>
16    </tr>
17    <tr>
18      <td> Pen </td>
19      <td> 4 </td>
20      <td> 3.50 </td>
21      <td> 14.00 </td>
22    </tr>
23  </tbody>
24  <tfoot>
25    <tr>
26      <td colspan = "3"> Total </td>
27      <td> 19.00 </td>
28    </tr>
29  </tfoot>
30</table>