Controlling Font Size in vba cmps

The font size is all over the place on my site in modules that I created with BB code. I have no clue how to control it. I have modules with the exact same settings, yet they have different size fonts???

Check out this example with an IE browser:

http://www.prenatalyogacenter.com/cm...hp?page=events


The "events" module in the center has the same settings as the modules below it. However the font size is smaller comparable.

Also my fonts vary in size depending on the browser. IE is huge, firefox is pretty consistent. Check out the same page above in Firefox to compare.

Can someone shed some light?