Possibly the issue is this?
Change:
@font-face { font-family: "digital"; src: url(/html/fonts/DS-DIGII.TTF); }
To:
@font-face { font-family: "digital"; src: url(fonts/DS-DIGII.TTF); }
Something that also may be the issue: In the past (not sure why) scripts I’ve worked on that required the use of external fonts in game .TTF fonts wouldn’t work but a .WOFF font would. If the fix above doesn’t work I would try converting the font to a different extension.