Thread:Spike144/@comment-20644-20121015200222/@comment-4674838-20121106210512

Sure, just add CSS such as this to your MediaWiki:Common.css:

Explanation:

^ Example of a collapsible table.

If you right-click and choose Inspect Element to look at the HTML structure with your web browser, the HTML looks something like this:

^You can see that the CSS selector you need to customize the link is

.mw-collapsible-toggle a