Changing font size in middle columns

I wanted to change the font size for the middle columns-categories, subcategories. Also the font size for Brands(manufacturers) and price listed in the body. I know I can change the body font size but this changes everything including the side boxes which I don't want to change their size.

I suppose I could reduce the side box font size and then change the body font-size to increase everything at once but I'm trying to see if there is an isolated way to increase the middle.

For those that want to change the overall font size it's in your stylesheet.css at the beginning listed here in bold.

body {
margin: 0;
font-family: verdana, arial, helvetica, sans-serif;
font-size: 62.5%;
color: #000000;
background-color: #FFFFCC;
}

If you add a font-size declaration to

.sideBoxContent

... you will influence all sidebox text size .