Thread:TheIsraeliSudrian/@comment-171752-20190214161633/@comment-171752-20190220195420

The reason the CSS listed at the top of Wikia.css (to change colors) is not working is because your wiki has the Europa style of infoboxes enabled, which requires  to be added to the code. Also, the Europa style causes infoboxes to be 300 pixels wide, instead of the normal width of 270 pixels.

I would suggest disabling the Europa infobox by going to WikiFeatures and scroll down to Europa Infobox Theme and click the Enabled button to switch it to disabled. This will make the infoboxes smaller, and the CSS you currently have for custom colors should work.