////
/// Mixin for defining animation keyframes
////
@mixin keyframes($name) {
    @-moz-keyframes #{$name} {
        @content;
    }
    @-o-keyframes #{$name} {
        @content;
    }
    @-webkit-keyframes #{$name} {
        @content;
    }
    @keyframes #{$name} {
        @content;
    }
}