K2 item titles - font face

I have serach my entire CSS lib, in K2 comp and gavick MyStore template.
But I can not find WHERE I change the font-family for K2 item headers / title.

in my Mozilla addon webdev, the style info says...: gk_mystore/css/k2.css: line 348 - only sizes.

and thees a NULL stylesheet file: line 85; font-family: Georgia etc.

I want to find this to change the font-family

Please