By CSS stylesheets, I mean pages in the MediaWiki namespace and end with .css. I know that common.css gets loaded, but the wiki I'm on has a bunch of other stylesheets like MediaWiki:NewFeaturesHere.css and MediaWiki:Fandomdesktop.css, which also get loaded. So are all stylesheets always loaded, or are there extensions (since our wiki has a bunch of extensions) that load them? If a new CSS stylesheet was made, would it just work?