Font Control Options

[tommiesguides]

Hi - I would like to change the font size on the site http://web146.extendcp.co.uk/limegreenpublishing.com/ so that the modules on the left all have the same size as the "categories". When I change the Body font-size to 13px this looks ok on the text but it must affect all attributed because the rest of the site and graphics do not fit properly. Is there any other options to alter font size that is scalable or fits better? It looks odd having different sizes especially on the left blocks.

Thanks

Ryan