Board Thread:Support Requests - Designing Your Wiki/@comment-32628376-20190520021059/@comment-23989026-20190520080145

This styling is stored in your MediaWiki:Wikia.css There is a help page that lists the classes to use in MediaWiki:Wikia.css >  Help:Infoboxes/CSS

Looking at Template:Character your wiki's theme is using Europa so the coding in MediaWiki:Wikia.css has to start with .pi-europa

You are going to use "Riverdale" or "CAOS" as the MediaWiki:Wikia.css classes. So an example would be .pi-europa.pi-theme-Riverdale .pi-title { border-radius: 5px 5px 0 0; }