Thread:DBard/@comment-26574555-20140210110846/@comment-26574555-20140211122908

/* The page background for the page and the advert section at the top */ .WikiaAdvertPage, .WikiaPage{ background:url(IMAGE URL) !important; background-repeat:no-repeat; background-attachment: fixed!important; }

/* Make the redundant background div behind the page transparent */

.WikiaAdvertPage .WikiaPageBackground, .WikiaPage .WikiaPageBackground {	background: none repeat scroll 0 0 transparent; }

.WikiaAdvertPage .WikiaPageBackground, .WikiaPage .WikiaPageBackground {	background: none repeat scroll 0 0 transparent; }

You need to input that in the css in order to change the background for the wiki though it will either change it immediately or wait an hour or two before it takes it effect..