CODE EXAMPLE FOR HTML

td whole row css

<!--
You should use the colspan attribute on the first row's td.
Colspan="3" will set the cell to flow over 3 columns.
-->

<table width="900px" border="0" cellspacing="0" cellpadding="0">
    <tr>
        <td align="center" colspan="3">check</td>
    </tr>
    <tr>
        <td align="center">check</td>
        <td align="center">check</td>
        <td align="center">check</td>
    </tr>
</table>