// Get aspect-ratio given the element's width/height
@mixin aspect-ratio($width, $height) {
  width: 100%;

  &:before {
    content: "";
    display: block;
    height: 0;
    width: 100%;
    padding-top: ($height / $width) * 100%;
  }

  img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
  }
}