Prevent FOUT and control font loading with CSS font-display
font-display gives easy, and precise control over Flash Of Unstyled Text.
It's makes it possible to tell the browser how long it should wait for a font before rendering a fallback.
Now in Safari TP (42+) and coming with Firefox 58+:
Edge once again the last one missing.
Chrome 60 with `font-display` released and Opera 47 is about to follow next. Still behind a flag in current Firefox Nightly.
In development in Chrome and Firefox.