MediaWiki:Monobook.css

body:not(.skin--responsive) #p-logo {
  background: #222222 none repeat scroll 0% !important;
  height: 111px !important;
  width: 100% !important;
  z-index:0 !important;
}

body:not(.skin--responsive) #p-logo a, body:not(.skin--responsive) #p-logo a:hover  {
  background-image:url(/images/d/dd/Entropia-wiki-logo.gif) !important;
  display:block;
  height:110px;
  width:160px;
}