MediaWiki:Activity.css/Activity 15.css

body.page-Special_WikiActivity { background-attachment: fixed; background-position: center; background-repeat: no-repeat; background-size: 100% auto; background: url("http://vignette2.wikia.nocookie.net/sonako/images/5/5d/Activity_15_Background.jpg/revision/latest/scale-to-width-down/1500?cb=20151212092501") center; }