Board Thread:New Features/@comment-33025440-20190319224408/@comment-168424-20190320230726

FYI, global CSS only applies to Special:MyPage/global.css here on Community Central. If you edit that page on another wiki, it won't have any effect. It's a special case of personal CSS.

And yes, it is CSS (Cascading Style Sheets) and not CCS (which would be Central Coast Section).