Board Thread:Support Requests - Getting Technical/@comment-31246436-20160915134457/@comment-28398720-20160915173124

You should look at your code, find the tag with "collapsible" and add it there. But beware, from a glance it seem like you are using the "old" wikipidea template, which use Javascript for the collapse function which I don't see. You might need to replace the state part to use mw-collapsible.