Board Thread:Support Requests - Getting Technical/@comment-43465048-20200404092547/@comment-9605025-20200406011200

Unai01 wrote: MediaWiki isn't removing anything, this is CSS default behavior. It works with your browser's dev tools because you're probably adding rules to the style attribute (elem.style) rather than the class itself. https://developer.mozilla.org/en-US/docs/Web/CSS/Specificity [no longer relevant]

No, that isn't the problem. - Edit:

I took a closer look at the wiki's CSS and the issue is the @font-face for "BodoniXT". Aside from the fact that it is incomplete, it is also missing a closing brace which is causing the CSS below to be ignored. This includes the Tabber styling. However, in the case of the Tabber styling, this absence isn't noticeable because the Tabber CSS is duplicated in Common.css.

At a minimum, you need to close the @font-face so that the other stuff works. I would suggest removing the duplicate CSS from Common.css. Since the duplicate CSS is the only CSS in Common.css, you could just blank the whole page. - Edit 2:

It looks like "BodoniXT" isn't used anywhere so you could probably just get rid of the @font-face rather than closing it.