[SOLVED] Font size suddenly changed in widget

Hi guys.

I have a question regarding the recent posts widget in my atahualpa theme.

Yesterday, the font size suddenly changed in that particular widget, both the heading font, and the listings.

I checked the code with the "view element details" tool in chrome, and I found that the widget is sorrounded by <big></big> tags. This is definately what is causing the problem, but how can I remove it?

You can see for yourselves here: www.peacebyheart.dk

It's placed in the right sidebar, in the bottom.