Board Thread:Support Requests - Getting Technical/@comment-32134737-20200308094108/@comment-9605025-20200309225910

As Tupka217 mentioned, that tag is associated with a feature not available in Fandom's current MediaWiki version. What it does is load the specified CSS page. This way, wikis don't have to load CSS that won't be used. What we have done is add the template CSS to your wiki's main CSS; which gets loaded on (almost) every page. If the page contains the relevant template, then you see the effects; if not, you don't.

Did that explanation make sense?