<style>
table, th, td {
border: 1px solid black;
}
</style>
<table>
<tr>
<th>Firstname</th>
<th>Surname</th>
</tr>
<tr>
<td>John</td>
<td>Doe</td>
</tr>
<tr>
<td colspan="2">Susan</td>
</tr>
</table>
This Pen doesn't use any external CSS resources.
This Pen doesn't use any external JavaScript resources.