Support All OSes main font out of the box

[anefzaoui]

I took (stole?) this concept right outta Facebook. In all their OSS projects, and in facebook.com itself, they follow this rule where they add support for all OSes, and come to think about it, that is the better approach if one is looking for a much better integration of the web page's look with the system that the user is on.

To see it in action: https://github.com/facebook/Docusaurus/blob/b374391446d1df7fca26cb9c390d72b9dc4b433b/lib/static/css/main.css#L51

lmk wdyt :)

r?

Thanks!