Tab control and font size

it seems the Tab control resets (or resizes) all font sizes of elements within. If I set CssClass="" (empty that is) this bug goes away. I see with DOM explorer that Tab control defines it's own CssClass, can I access this somehow to change font sizes? Or should I do this manually for each content template?This may help:http://community.bennettadelson.com/blogs/rbuckton/archive/2007/02/02/Skinning-model-for-Calendar-and-Tabs-in-Ajax-Control-Toolkit.aspx