Hello, I would like to add a notification banner to my wiki (I think it's called that) like on this wiki. When you arrive on this wiki a banner is displayed at the top with the writing <notification> .Can you help me to create this?
Yes. BannerNotification is what you are looking for.
How should I add this to my wiki? Should I make changes to the CSS content, if yes which ones?
Should be fine if you place it anywhere.
And after placing it in the MediaWiki:Wikia.js, will it be displayed directly?
I have been to see on this wiki and I cannot find, in the 'MediaWiki: Wikia.js' , how they wrote to have the banner
Yes, it should display correctly if placed in MediaWiki:Wikia.js.
I'm not sure how The Disney Wiki admins did it, though.
What do you think?