Two stylesheets and two scripts don't load because they're declared with two forward slashes at the beginning of the URL, which browsers can't handle:
If you remove those double slashes, the stylesheets load and the page looks fine.
Also, there's an imported stylesheet which doesn't seem to exist on the server.
[SELECT ALL] Code:
http://wiki.cubers.net/:13 GET http://load.php/?debug=false&lang=en&modules=mediawiki.legacy.commonPrint%2Cshared&only=styles&skin=monobook&*
http://wiki.cubers.net/:18 GET http://load.php/?debug=false&lang=en&modules=site&only=styles&skin=monobook&*
http://wiki.cubers.net/:174 GET http://load.php/?debug=false&lang=en&modules=startup&only=scripts&skin=monobook&*
http://wiki.cubers.net/:174 GET http://load.php/?debug=false&lang=en&modules=site&only=scripts&skin=monobook&*
Also, there's an imported stylesheet which doesn't seem to exist on the server.
[SELECT ALL] Code:
@import ./style_for_Main_Page.css;