Il y a deux moyens d'utiliser FontAwesome :
Voir la documentation complète et la cheat sheet.
La version 4.5.0 de FontAwesome contient 605 icones.
<link type='text/css' rel='stylesheet' href="https://cdn.altitude3.net/_media/StyleSheet/70.css" />
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.question:before{ content: "\f059"; font-size: 1em; color: red; font-family: "FontAwesome"; }