Board Thread:General Discussion/@comment-5377726-20171105050923/@comment-9605025-20171105203021

Undead.exe wrote: I just fiddled around a bit, and as far as the personal CSS pages are concerned, I seem to be getting different results for whether it kicks in depending on whether it's in  C ommon.css (doesn't seem to work) and  c ommon.css (seems to work). Same thing seems to happen for Wikia.css and wikia.css -- the uppercase versions don't seem to work, but the lowercase ones do...?

If you can, try posting the CSS to MediaWiki:common.css or MediaWiki:wikia.css on your wiki, but it feels like it's the system itself being finnicky -- I was testing with the whole code you linked, and it was working with the lowercase pages, but not the uppercase ones. That is because CSS/JS pages are case sensitive. Site-wide CSS such as MediaWiki:Common.css are capitalized while personal CSS such as User:Andrewds1021/common.css are not.

Also, this site is helpful in determining which browsers support certain CSS. For example, scrollbar support.