@Emma Of The Sea Do you know if this can work?

Unless it's an auto created template from Fandom (Series, Book, Film, etc), then no, I don't think so. I could help you with the template if you tell me what it is.

I guess you could import the template code into MediaWiki through @import and create a div class with it maybe. Idk if that only effects CSS and not JS or HTML tho.

Oh, ok. I want to make custom templates for a wiki, but they won't let me since it can't really be used on actual pages. Maybe you can test it real quick and report back.