$spriteWidth: 70px;
$spriteHeight: 30px;

@mixin cookieSprite($position, $width: auto, $height: auto) {
  $positionX: nth($position, 1) * -1;
  $positionY: nth($position, 2) * -1;

  background: url("/img/cookie-sprite.svg") $positionX $positionY no-repeat;
  background-size: $spriteWidth $spriteHeight;
  width: $width;
  height: $height;
}