public/font-awesome/scss/_mixins.scss
// Mixins
// --------------------------
@mixin fa-icon() {
display: inline-block;
font: normal normal normal 14px/1 FontAwesome; // shortening font declaration
font-size: inherit; // can't have font-size inherit on line above, so need to override
text-rendering: auto; // optimizelegibility throws things off #1094
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
}
@mixin fa-icon-rotate($degrees, $rotation) {
filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=#{$rotation});
-webkit-transform: rotate($degrees);
-ms-transform: rotate($degrees);
transform: rotate($degrees);
}
@mixin fa-icon-flip($horiz, $vert, $rotation) {
filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=#{$rotation});
-webkit-transform: scale($horiz, $vert);
-ms-transform: scale($horiz, $vert);
transform: scale($horiz, $vert);
}