Board Thread:Support Requests - Designing Your Wiki/@comment-33708304-20190807071605/@comment-168424-20190809013426

Sure you can change it, but the help pages don't give you any ideas what to set your background height to... and no it isn't just a PC background pic, because those usually have standard sizes based on standard monitor sizes. At least on FANDOM, wiki backgrounds need to work well with a resizable browser window and FANDOM actually split backgrounds in the middle (imagine a vertical cut down the middle) when the browser window gets wider than the background.

I'm not sure OrtonLongGaming has lost interest by now, but HammerStrikes219, you've done a great job of muddying the waters without giving much useful info or anything based on experience with FANDOM wiki backgrounds.