_compatibility.scss

// for iconfont font size
// fix chrome 12px bug, support ie
@mixin iconfont-size-under-12px($size, $rotate: 0deg) {
  display: inline-block;
  $font-scale: $size/$font-size-base;
  font-size: $font-size-base;
  font-size: "#{$size} \9"; // ie8-9
  transform: scale($font-scale) rotate($rotate);
  :root & {
    font-size: $font-size-base; // reset ie9 and above
  }
}