I'm stumbling around trying to figure out how to increase the font size of the category names on my front page. Nothing I change in the CSS sheet seems to make a difference.

The category name and the category description appear to default to the same size. This is causing the front page of these directories to look like a residential phone book page and very difficult to navigate or distinguish categories from anything else. It all blends together.

What do I need to modify to either bold my categorys and or increase the font size?