Table Not Displaying Properly

I’m having a strange issue with this website: http://strong-willedchild.com.

When I try to put a table on the site using standard HTML code, the table doesn’t display properly. For example, if I use HTML code similar to this:

<table style=”width:100%”>
<tr>
<td>Jill</td>
<td>Smith</td>
</tr>
<tr>
<td>Eve</td>
<td>Jackson</td>
</tr>
<tr>
<td>John</td>
<td>Doe</td>
</tr>
</table>

instead of the row items displaying side-by-side, the items in the righthand column display much lower than the ones in the lefthand column.

I was wondering if I could get some advice as to what might be causing this issue and how to fix it.

Thanks.