Thread:CzechOut/@comment-27295021-20170907202108/@comment-188432-20170908201817

Well, I dunno about pressing CTRL-ALT-DELETE. I'm not a Windows user, but I'm given to understand that may not achieve what you want. :)

With CSS, you create things called classes which contain styling information. So if you said: .red { color : red } ... in your MediaWiki:Common.css, that would mean that if you then typed this on a page ... Hi there! then you'd literally turn "Hi there!" red. ( Hi there! )

You've added a whole set of classes to your Common.css which start with .infobox. But the problem is there's nothing which calls .infobox on your wiki, because you're using portable infoboxes. And portable infoboxes don't use the class .infobox at all. So you should just blank Common.css and start over.

Since you know nothing about CSS coding, it may be wise to keep Common.css blank until you learn a little more coding. Luckily, your wiki is set to use Europa-styled infoboxes by default, and Europa is a great starting theme for someone in your situation. Your infoboxes will display just fine for now. As you explore the resources I linked you to, you'll eventually be able to add code to your CSS pages that will be able to actually change the look of the infoboxes. :)