Board Thread:Support Requests - Designing Your Wiki/@comment-876677-20170131221136/@comment-168424-20170201004054

Dev wiki has forums. See Dev wiki forums.

I should have looked at the example link I gave closer. It had a JS demo, but the help is awful.

Also, which version of Firefox did you try, I read that webkit CSS stuff should work on v49.0.2 and later.