osx FF78 change bookmarks manager window font size

[yyoshpe]

hello,

need help modifying userChrome.css so that I could read the bookmarks (losing my eyesight ;-{, and tons of bookmarks being used) .. have tried most anything I could find discussed, but none of it works .. (the zoom about:config setting is NOT what I need, as that changes the tab-font-size too, and I'd like that to stay as is, same for menus)

any help would be appreciated

thanks