After Update: Line where none should be

Hallo,

here is a screenshot of my website www.mideva.net.

The first grey line below the red text should be there. But the second one which looks a little like shadow is there since I updates the betheme.

In the colum which is effected is the following code/text:

<table>

<tr>
<td class="td"><h4>Adresse</h4>
<p>Raiffeisenstraße 5<br>
26897 Bockhorst</p>
<p>Tel.: 0 49 67 / 5 42 <br>
Fax: 0 49 67 / 5 73<br>
E-Mail: info@mideva.de
</td>

<td class="td"><h4>Öffnungszeiten</h4>
<p>Montag bis Freitag<br>
9.00 - 18.00 Uhr</p>
<p>Samstag<br>
9.00 - 12.00 Uhr<br>
<font style="color:#f6f2f2";>.</font></p>
</td>
</tr>

</table>

class="td" is defined like this

.td {
    border: none;
    text-align: center;
}

Please help.