Board Thread:Support Requests - Designing Your Wiki/@comment-39949541-20200311011637

I've been an administrator for several wikis for a few years on Fandom, ever since it was Wikia. I know HTML and JavaScript, but I don't know if that will be much help here. Almost every Wiki I'm active and/or am an admin on already has a CSS designer, so I hadn't much need to focus on the CSS design. All I know about CSS is a few basic properties. Anyway, I finally decided to create my own wiki (massive work in progress). However, I'm so far alone in the creation of it, and I would really like a background. Some of my hobbies include photoshopping and image designing, so this should be easy. However, it is not. I cannot for the life of me find any way to design any background. Using Photoshop for quite some time I don't see any way that a background could have a 300 kilobyte limit. I've found and tried to use the template, but its already on it's own too big to be the 'correct size.' Any background I create will have awful quality once resized or optimized. It always says 'incorrect file size' and I have no idea what to do. Can somebody please help? I find the Fandom University tutorial utterly useless right now (I'm sure it's helpful, I just don't see how), and I can't find any answers on the forums. This seems so simple and I feel stupid for asking this, but I truly need help. It would be create if someone can give me a better tutorial. 