1.
<table>
<colgroup>
<col>
<col class="alternative">
<col>
</colgroup>
<tr>
<td>This</td>
<td>That</td>
<td>The other</td>
</tr>
<tr>
<td>Ladybird</td>
<td>Locust</td>
<td>Lunch</td>
</tr>
</table>
2.<table>
<caption> **</caption>vs figcaption
caption-side:bottom;
3.
<table>
<thead>
<tr>
<td>Header 1</td>
<td>Header 2</td>
<td>Header 3</td>
</tr>
</thead>
<tfoot>
<tr>
<td>Footer 1</td>
<td>Footer 2</td>
<td>Footer 3</td>
</tr>
</tfoot>
<tbody>
<tr>
<td>Cell 1</td>
<td>Cell 2</td>
<td>Cell 3</td>
</tr>
<!-- etc. -->
</tbody>
</table>