MediaWiki:Fandomdesktop.css

body.skin-fandomdesktop { background: url(https://static.wikia.nocookie.net/jonaverse/images/4/48/Jonaverse_Wiki_BG_1920x1080_small_under_300kb_%284%29.jpg/revision/latest?cb=20210807063601) fixed center 0 / cover var(--theme-body-background-color); }