MediaWiki:Common.css

#p-logo a { background: url(images/logotop.png) 35% 50% no-repeat !important; }
a:visited { 
  color: green
}

body {
  background: #f9f9f9 url(/mw/images/Green_Wallpaper.jpg) 0 0 repeat;
}

/* see MediaWiki:Vector.css */
.vectorTabs li {
  background-image: none;
  background: white;
}