ESPTrainer/imports/ui/styles/_compat.scss

@mixin scale($amount) {
  -webkit-transform: scale($amount);
  -moz-transform: scale($amount);
  -ms-transform: scale($amount);
  -o-transform: scale($amount);
  transform: scale($amount);
}

@mixin box-sizing($value) {
  -webkit-box-sizing: $value;
  -moz-box-sizing: $value;
  box-sizing: $value;
}