<table style="height: 100%; width: 100%; text-align: center;" border="0" cellpadding="0" cellspacing="0">
      <tr>
        <td valign="middle" style="height: 100%;">
          <table width="80%" height="100%" border="0" align="center" cellpadding="0" cellspacing="0" style="background-color: #666666;">
            <tr>
              <td valign="middle" style="text-align:center;">
                bla bla bla
              </td>
            </tr>
          </table>
        </td>
      </tr>
    </table>