scss 来自Foundation（Zurb）的Flex Video Mixin的修改版本https://github.com/zurb/foundation/blob/master/scss/fou

Posted 2021-05-18

//
// Flex Video Variables
//

$flex-video-padding-bottom:            67.5% !default;
$flex-video-widescreen-padding-bottom: 57.25% !default;

//
// Flex Video Mixins
//

@mixin flex-video-container {
  position: relative;
  padding-bottom: $flex-video-padding-bottom;
  height: 0;
  overflow: hidden;

  &.widescreen { padding-bottom: $flex-video-widescreen-padding-bottom; }
  &.vimeo { padding-top: 0; }

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