Thread:Project:Support desk/Special Page which makes the sidebar, tabs and top captions invisible/reply (6)

> If it looks like a duck, walks like a duck and quacks like a duck, then it's probably an elephant.

Completely right. :-)

Now let's get clear how they add this CSS code there. My guess would have been that they do this with one of the pages in the MediaWiki namespace, e.g. or. But I do not find the according CSS there. They have not modified the MediaWiki sourcecode, have they? ;-)