@font-face {
    font-family: "RockSolid Icons";
    src: url("rocksolid-icons.eot");
    src: url("rocksolid-icons.eot?#iefix") format('eot'), 
         url("rocksolid-icons.woff") format('woff'), 
         url("rocksolid-icons.ttf") format('truetype'), 
         url("rocksolid-icons.svg") format('svg');
}
*[data-icon]:before {
    content: attr(data-icon);
    font: 1em/1 "RockSolid Icons";
}