Board Thread:Support Requests - Getting Technical/@comment-28011324-20170816021704/@comment-32354545-20170816022519

You didn't have the Ambox template itself.

One of the dependencies of the Ambox template is the CSS you can find at c:templates:Template:Ambox/code.css. You should copy that to your Wikia.css. You should also copy it to your Monobook.css.