Board Thread:Support Requests - Getting Technical/@comment-13918697-20141114160124/@comment-452-20141116145328

That's CSS - it goes on a CSS page such as Mediawiki:Wikia.css. (See Help:JavaScript and CSS Cheatsheet for more info.)

Once that CSS is added to your wiki's CSS, that page should look like this:



You may want to also center the caption, or at least add some padding.

edit: Despite the claim that my response was unhelpful, the CSS I provided has been adopted on that wiki with some slight modifications, and the end result looks very similar to the screenshot I provided. My suggestion to center the caption was also adopted.