Medium - CSS for the Functional Programmer - Aspect Example

_aspect.scss

@mixin aspect-ratio($width, $height) {
  position: relative;
  &:before {
    display: block;
    content: "";
    width: 100%;
    padding-top: ($height / $width) * 100%;
  }
  > .content {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
  }
}

.one-one {
  @include aspect-ratio(1, 1);
}

.four-three {
  @include aspect-ratio(4, 3);
}

.three-four {
  @include aspect-ratio(3, 4);
}

.three-two {
  @include aspect-ratio(3, 2);
}

.sixteen-nine {
  @include aspect-ratio(16, 9);
}

.three-one {
  @include aspect-ratio(3, 1);
}