@mixin respond-to($type, $query) {
    @media only screen and ($type: $query) {
        @content;
    }
}

// RTL direction
@mixin rtl() {
    [dir="rtl"] &,
    [lang="ar"] & {
        @content;
    }
}

// Usage:
// @include respond-to(max-width, 768px) {
//    width: 50%;
// }