<style>
table { border-collapse: collapse; }
td {
border: 1px solid blue;
height: 100px;
}
</style>
<table>
<tr>
<td style="vertical-align: top">top</td>
<td style="vertical-align: middle">middle</td>
<td style="vertical-align: bottom">bottom</td>
</tr>
</table>