icon.scss

@mixin icon($icon, $position:before) {
  &:#{$position} {
    @extend %#{$icon};
    display: inline-block;
    font-family: 'fontello';
    font-style: normal;
    font-weight: normal;
    speak: none;
    text-align: center;
    text-decoration: inherit;
    width: 1em;

    @if($position == before) {
      margin-right: 0.5em;
    } @else {
      margin-left: 0.5em;
    }
  }
}