MediaWiki:Monobook.css

 /** Kleinschreibung nicht erzwingen */
 .portlet h5,
 .portlet h6,
 #p-personal ul,
 #p-cactions li a {
 	text-transform: none;
 }

 /* Navigation höher setzen */
 #p-logo,
 #p-logo a,
 #p-logo a:hover {
    height: 135px;
 }
 
 #column-one { padding-top: 135px; }

 /* background image */ 
 
 body {
   background: #f9f9f9 url( ) 0 0 repeat;
 }
 #p-logo a {
    background-image: url( http://kif.uni-verden.de/w/images/6/6b/Am_klein.png );
 }