<table style="border-collapse:collapse;font-family:sans-serif;font-size:1em">
<thead>
<tr><th>a</th> <th>b</th> <th>c</th></tr>
</thead>
<tbody>
<tr><td>1</td> <td>4</td> <td>7</td></tr>
<tr><td>2</td> <td>5</td> <td>8</td></tr>
<tr><td>3</td> <td>6</td> <td>9</td></tr>
</tbody>
</table>