MediaWiki:Common.css

/* CSS placed here will be applied to all skins */

body {	background: url(https://static.miraheze.org/doswiki/2/27/DOSWiki_Background.png); background-size: cover; background-color: #000000; background-attachment: fixed; }

{	background-image: none; background-color: transparent; }
 * 1) mw-page-base