gk-short-menu font size

Hi, i tryed to change the font size go gk-short-menu in gk.stuff.css, but in the frontend i can't see any change. I'd like to have a bigger font for the text, how can i do it?
Thank you and sorry for my bad english, hope i'll be understood.

Its better to use override.css
Could you please post an url to your site?
Could you please mark a menu you would like to change on a screenshot?

Hi, i'm working on it locally, and right now i have some problems to upload it on my test site, but i tried also on the old online version and it doesn't work.

Here there is a screenshot and the css i changed.

Thank you for your help

Screenshot.jpg

gk.stuff.jpg

Right now, i solved it putting the font size directly on the Tinymce editor, but if there is a better way i'll thank you if you make me know.

Sorry, but without live access I can't help much. I need to be able to see whats the problem.