Font awesome not displaying properly on Firefox

Question

I am trying to use a font awesome icon in a widget that is installed on a customers website. The font awesome icons displays correctly in Safari and Chrome but doesnt in Firefo

Answer 1

Firefox only allows cross-domain linking of fonts if the server the font is on sends the right CORS headers. And it does this because the spec very clearly says to do it, at http://dev.w3.org/csswg/css3-fonts/#default-same-origin-restriction