Thread:Technobliterator/@comment-4041822-20161229180307/@comment-1370845-20161229222041

Hey! I am familiar with navigation templates like this (though I would not call them "navboxes").

I am not sure if it is possible to remove the gaps between the lines. However, making it collapsible (ie including a [show] tab) is possible. I would look up collapsible elements on MediaWiki to understand how to do it yourself, but it's fairly simple. Wrapping it in a, with some content outside the table, and then wrapping the table in a , and closing with two s, should do the trick.

Hope this helps!