Board Thread:Support Requests - Getting Technical/@comment-12198205-20140519081825/@comment-856287-20140519125649

Jsteel7 is exactly right:

Jsteel7 wrote: What you currently use background:;

What you need to use:

Also, your gradient template had a newline at the end, which was breaking it. I've fixed it for you, so using it correctly (as Jsteel7 said) will work now.

…and I started to look into your collapsible templates, but when I opened your Common.js… it was ugly in there 😆

You have nine [ ''' ! ''' ] separate imports, when you should have only one for all of them, like this:

Put that at the bottom of the file and remove all other import calls (sections that say "importArticles," "importscriptpage" etc.).

The ShowHide code you were using is deprecated: you shouldn't be using it anymore. It's already in MediaWiki and you are loading that AND an extra script to do it over again. I don't know why the collapsible elements suddenly stopped working, but you should be using mw-collapsible anyway, and remove the ShowHide script import entirely.