mixin.scss

@mixin embed-container($width, $height) {
  $ratio: ($height / $width) * 100%;

  position: relative;
  padding-bottom: $ratio;
  height: 0;
  overflow: hidden;
  max-width: 100%;

  iframe, object, embed {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
  }
}