Board Thread:Support Requests - Getting Technical/@comment-9605025-20200131170747/@comment-27345308-20200201025207

There were no changes to loading of CSS in the last few years.
 * Yes, MediaWiki:Common.css was disabled on wikis created before July 2014 so its contents do not break Oasis.
 * I don't see what you mean by "CSS loading is switched to load.php". It was always loaded via load.php, also known as ResourceLoader.
 * There was a change to remove the default contents of MediaWiki:Common.css (probably around April 2018) so s could be placed in MediaWiki:Wikia.css. This is because, on wikis with MediaWiki:Common.css enabled, ResourceLoader loads both MediaWiki:Common.css and MediaWiki:Wikia.css, then minifies and concatenates them together. As   statements can only work when placed on top of the concatenated (and minified) stylesheets (and this was always the case), this means:
 * If MediaWiki:Common.css isn't enabled, you will have to place your imports on MediaWiki:Wikia.css.
 * If there are contents of your MediaWiki:Common.css other than imports, you will have to place your imports at the top of it.
 * Regardless of what CSS page are you placing imports on, you will have to place them on the top.