Thanks in advance for all your HELP!

Using ZC version: 1.3.02
Using a modified CSS based on the one for 'template_default

Site:
http://www.sbservices.us/store/

In the CENTER column / boxes area, what Im trying to accomplish is to have each of the sections - NEW products, or Featured products or whatever other section I want to use there - to HAVE the same MARGIN, or padding as I have for each of the SIDEBOXES - ''category, info, specials, search, etc...
In the CSS I figured out how to set the margin/padding for the LEFT and RIGHT columns, but no matter how much Ive experimented with the center column wrappers, content wrappers, etc in the CSS, I cant get either a border or a margin around these sections;

If the page background is BLACK, I want to either have EACH of these center sections to have the SAME black border or a margin between them, as do the left / right columns...

For example;
The first section 'New Products for...'
I'd like to have that entire section SEPARATED from the one above it and the 'Monthly Specials" section below it - either by a black border or a margin setting (that will appear to be a border - again, just like the boxes in the left and right columns are separated by the black background).



Thanks!!