Increase center_column width for categories only

[Clean Mitts]

Any idea how I would expand the center_column width for the categories page only?

 

I can change it for every page in global.css but as I have removed the right columns in the categories page so customers can see more products, I want to expand this center column across but can't see how to do it.

 

Address is www.cleanmitts.org/shop

[Clean Mitts]

Solved, I added:

 

#center_column {

width: 765px;

margin: 0 0 30px 0;

overflow:auto

}

 

into the category.css file.