Board Thread:Support Requests - Designing Your Wiki/@comment-5739199-20201028171306/@comment-9605025-20201028184928

The problem is that UCP restored an old behavior with regards to CSS imports. This old behavior means that all imports must be placed at the top of Common.css in order to work. The import used for the CSS that isn't working is currently on Wikia.css. If you move it to Common.css, that should fix your issue. - Edit:

Also, you have Common.css/infobox.css. You might want to consider combining the 3 different infobox stylesheets into one.