// Adds keyframes blocks for supported prefixes, removing redundant prefixes in the block's content
@mixin keyframes($name) {
  $original-prefix-for-webkit:    $prefix-for-webkit;
  $original-prefix-for-mozilla:   $prefix-for-mozilla;
  $original-prefix-for-microsoft: $prefix-for-microsoft;
  $original-prefix-for-opera:     $prefix-for-opera;
  $original-prefix-for-spec:      $prefix-for-spec;

  @if $original-prefix-for-webkit {
    @include disable-prefix-for-all();
    $prefix-for-webkit: true;
    #{"@-webkit-keyframes"} #{$name} {
      @content;
    }
  }
  @if $original-prefix-for-mozilla {
    @include disable-prefix-for-all();
    $prefix-for-mozilla: true;
    #{"@-moz-keyframes"} #{$name} {
      @content;
    }
  }
  @if $original-prefix-for-opera {
    @include disable-prefix-for-all();
    $prefix-for-opera: true;
    #{"@-o-keyframes"} #{$name} {
      @content;
    }
  }
  @if $original-prefix-for-spec {
    @include disable-prefix-for-all();
    $prefix-for-spec: true;
    #{"@keyframes"} #{$name} {
      @content;
    }
  }

  $prefix-for-webkit:    $original-prefix-for-webkit;
  $prefix-for-mozilla:   $original-prefix-for-mozilla;
  $prefix-for-microsoft: $original-prefix-for-microsoft;
  $prefix-for-opera:     $original-prefix-for-opera;
  $prefix-for-spec:      $original-prefix-for-spec;
}
