If you look at this page, I have two sections that are outlined in orange, a nav box and content box:
http://www.fishertradingcompany.com/accessories.htm

I’m having a really hard time getting the top and bottom boxes to be the same width - the bottom box is either 1 pixel too big, or i pixel too small.

The div Content is what I have been adjusting.
Right now this is what is is set at and it looks too big.
width:936px;
padding-left:10px;
padding-right:11px;

If I decrease any of the numbers above by 1, the box will look too small.

Here is a link to the CSS:

CSS

I appreciate any input.