Board Thread:Support Requests - Getting Technical/@comment-3279487-20160430135304/@comment-856287-20160502233837

Rigel Kent wrote: This is a hack, but you can override the inline styles injected by the JavaScript by inserting this rule into your site CSS.

.mw-collapsed { display: none !important; }

That would allow for instantly collapsing (the element disappears and then the animation plays), but it doesn't work for expanding... sometimes... :D

Also, you would always have to make a separate button for the show/hide function, as in Help:Collapsing. Otherwise, when collapsed, the entire element (including the 'Expand' controller) is hidden. ...and you would need to make sure all of your users know that it works that way on your wiki. D: