Improve consistency of default fonts

[sindresorhus]

Fixes #3

Note to self: Open an issue about including system-ui if this PR is merged.

[anselmh]

Looks good. Unless the relatavely new stack by Github should be incorporated here, this is good to go into stable branch.

[sindresorhus]

Unless the relatavely new stack by Github should be incorporated here

@anselmh What do you mean? This is using GitHub's exact stack.

[anselmh]

😶 I see it from the source code now. Now the entire blog post ist only confusing to me, it seems I completely misinterpreted it, including my statement about Helvetica (I still don’t get github’s decision on that then). What means the Pull Request changes here are totally fine without any concerns.

[Haroenv]

👍

[mdo]

Y'all should reach out to our Design Systems team (pinging @broccolini) and the Chrome devs. They reached out to us about moving away from the Blink specific font name there, but we had our own challenges when attempting that several months ago I believe.

[broccolini]

Here's a pr I started which includes some info on the font stack: primer/css#408 re removing BlinkMacSystemFont. I haven't continued as there hasn't been much follow up from the Chrome folks, and there's not a clear positive solution that works for everyone.

[sindresorhus]

Seems like the safest bet is to stick with what's here until primer/css#408 is resolved or we hear back from Chrome devs. I'll try to ping some people I know.

[sindresorhus]

Continued in #18.