@mixin aspect-ratio($width, $height) {
  position: relative;

  &:before {
    display: block;
    padding-top: (($height / $width) * 100%);
    width: 100%;
    content: ' ';
  }
  & > &__inner {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
  }
}