Thanks, Damien. The file is in the media folder. Other fonts I have installed in the system work perfectly. I think the file is in the right format but not entirely sure. I will upload the _FontAwesome.ttf that I am using
The code you included here looks ok to me. I'm afraid if it's not working, the font may not be in a format Anki's web libraries accepts. If you try a different font file and that does work, that would seem to back up that assumption.