Technically any member who has CSS editing experience can help you but here’s the rub. Your theme is a premium theme and those posting here who do answer CSS editing questions free of charge don’t have free access to that theme as it’s a paid theme. The custom design upgrade does come with Staff support though so please hang in there.
I’m sorry but I don’t know what to advise you to do but you don’t seem to have anything to lose by posting there. Note: I searched the premium theme forum for Minimum for you before I commented above and couldn’t find an answer for you. http://premium-themes.forums.wordpress.com/forum/minimum