@mixin text-stroke($size: 1px, $colour: #ffffff) {
  -webkit-text-stroke: $size $colour;
  text-stroke: $size $colour;
}
@mixin \!text-stroke($size: 1px, $colour: #ffffff) {
  -webkit-text-stroke: $size $colour !important;
  text-stroke: $size $colour !important;
}