Forum OpenACS Q&A: table layout in default-master.adp

I've got the following layout model:
<table width="100%"><tr>
<td></td>
<td width="fixed">some content</td>
<td></td>
</tr></table>

usually this set up allows for margins to expand or contract in the context of various screen resolutions.
In the openacs setup, the blank td's stay put.
I've looked through the relevant css's but I've so far been unable to find anything.

Any ideas on how to fix this ?

thanks,