Board Thread:Support Requests - Getting Technical/@comment-38737193-20200324171256

I have been trying to get spoiler warnings like how they are on this page:

https://kiseki.fandom.com/wiki/Rean_Schwarzer

...to this one:

https://ceal.fandom.com/wiki/Crystal_Seal_Chronicle

Specifically, I would like to have a custom "this page contains spoilers"-box at the top of the page, and the spoilers hidden from view in a good way.

I think I've managed to get the spoilers to hide for now (though I'm open for suggestions for a better way, like a colapsible box that you can't acidentally view through hovering over it too long), but I have no idea how to add the box at the top like the Rean Schwarzer page has it. I've looked through the source code, but I simply have no idea what triggers this box there and how to replicate it.

Any suggestions? 