Thread:LightEcoSage/@comment-188432-20180604191819/@comment-188432-20180608153824

As the instructions in ThemeDesigner say, header backgrounds need to be 471px wide by 115px tall. They can indeed add a lot of pizazz to a wiki, but I've found they also require some finessing. It might take you several attempts before you get the elements positioned just the way you want them. You have to consider how the image is going to interact with the icons and text on that part of the header. Typically, it's smart to think in terms of monochromatic images — not necessarily black and white, but pulling the image towards the color of the header itself — as it mutes the design so that the buttons and text can be seen more clearly.

I'm not exactly sure what kind of reply you were looking for, since you didn't ask a question, but I hope that was helpful!