When viewing source code on GitHub, their CSS specifies the following fonts:
font-family: SFMono-Regular,Consolas,Liberation Mono,Menlo,Courier,monospace;
Even though I have SFMono-Regular installed on my Mac (in
~/Library/Fonts/SFMono-Regular.otf), Firefox uses Menlo to render the element. Both Safari and Chrome correctly use SFMono.
How can I get Firefox to detect and use the fonts installed in