Flash Of Unstyled Content
In some browsers, most notably Firefox, you may see a (barely) noticeable ‘blink’ before the real font loads in (a.k.a. Flash Of Unstyled Content). This is a result of Firefox’s handling of the
Paul Irish offered an elegant solution that hides the page contents for a maximum of three seconds and affects Firefox 3.5+ only.
Read more about Paul Irish’s Defeat the Firefox FOUC entirely.