Thread:Project:Support desk/Layout problem at the main page

Hello,

I have installed the MediaWiki on a new server and now I have the Problem, that the face of sidebar is a little smaller then the content in the middle of the page. But this problem is just at the mainpage... on every other page it is normal.

you can see it here: http://gehewikitest.gehe.de.celesiogroup.com/index.php/Hauptseite

Please help me!!

thanks