There are 3 errors which must be fixed before you can update this file. [] Update anyway, even though it might break your site?
CSS editing in free version
Second question:
So I dug into the CSS editor b/c I was interested in making a couple of tweaks (I wanted to remove the "Next" and "Previous" tabs at the bottom of the site they're way too thick, and I wanted to make the author's gravitar to appear square in the author's bio instead of as a circle). Anyway I stopped b/c I saw an error message that scared me. It might be some plugins I added or something, but I wasn't sure if it was a security measure to prevent people from modifying CSS on the free version. Is it possible to modify the CSS on the free version, or is that only something you can do with the Pro version? The error message I got is below: