Natively integrated custom CSS (and editor) for Fibery workspaces

There has been various discussion of this over the years, but I think it’s time to have a proper feature request for this: a built-in “native” custom CSS function and (basic) editor that can adjust the styling of many aspects of a Fibery workspace. An excellent example of this kind of thing is in Discourse (this forum) itself.

I can think of a number of optional features that would be great, like per-user or per Space CSS that admins could adjust, but that may be getting well into overkill territory. :smile: Just a Workspace-wide custom CSS would help a lot!

It would also address a number of other feature requests and discussions (and differing opinions on each!), at least until the more important ones can be implemented directly e.g.:

And of course:

Also some of this: