// 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();
        $prefix-for-webkit: true !global;
        @-webkit-keyframes #{$name} {
            @content;
        }
    }

    @if $original-prefix-for-mozilla {
        @include disable-prefix-for-all();
        $prefix-for-mozilla: true !global;
        @-moz-keyframes #{$name} {
            @content;
        }
    }

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

    @if $original-prefix-for-spec {
        @keyframes #{$name} {
            @content;
        }
    }
}