Hi!
for only the description, search in details.html:
<td valign="top" class="row1">{image_description}</td>
and replace:
<td valign="top" class="row1" style="font-size:22px">{image_description}</td>
wish you all the rows, search in your templates/style.css:
.row1{
insert below:
font-size:22px
the same with "row2{"
mfg Andi