How to resize font in postbit

[gatorenvy]

As you can see on my forum, there is TONS of dead spead in the posts. This is because I have all the vbplaza info on the left side. I want to shrink the font of pretty much everything in there. Including the username, join date, and vbplaza info.

I'm assuming i need to edit the postbit and the postbit_legacy???

I'm a newb to coding and vbulletin, so please give clear directions. Thanks!!

Example:
http://www.gatorenvy.com/forums/showthread.php?t=264