Board Thread:Support Requests - Getting Technical/@comment-35289850-20200818180523/@comment-32704847-20200820011316

I've been using this tweak here and here.

Just add this line to you local CSS:

.skin-oasis .WikiaArticle {overflow:unset}

This fixes a problem with the article column, that have the overflow rule set to "hidden" through the Qualaroo.scss (the base CSS for Fandom wikis). Sticky elements cannot exist inside containers with "overflow:hidden". I don't know why, it's just what happens.

CAUTION: This code may be dangerous for wikis containing fancy styles implemented on articles, either inline (written on articles themselves) or through CSS (on mediawiki). Elements on articles that are larger than the article column, or that use position absolute, z-index, etc., may overflow the space of the article and cover other parts of the wiki. Depending on how this happens and which parts of the wiki page gets messed up, it can even break the Fandom rules on the customization of site. So only use this if can assure that the content of your articles won't overflow. This is commonly used on Wikipedia to stick headers of huge tables. But Wikipedia have their own rules. Bla, bla, bla. I just checked and wikis on the UCP no longer have this limitation, so you won't have problem making your wiki similar to the UCP wikis. OR you can just wait for your wiki to be migrated.