"about" window is half off the screen on Mac Firefox

[iangilman]

I see that it's centered on Chrome, but in Firefox it's half off the left side. Looks like specifying a left for .about .content can fix it…

[anvaka]

Thank you for reporting this.

It is puzzling to me, as if I try to resize a browser’s window just a little bit, then the about box is centered... I must be missing something

[iangilman]

Indeed, it is a weird one! I see the same results you do.

I think the root of the issue is that you're using position: absolute inside your flex container. I guess that combination isn't well covered in the spec, so Chrome and Firefox handle it differently.

I've made a pull request (#4) with a proposed fix.