Block Mixins

.wp-block-some-block {
    // All devices
    // -------------------------------------------------------


    // Element < 1024px ...
    // -------------------------------------------------------
    @include blockOnTablet {
        //background: #e4ffe1;
    }

    // Element < 580px ...
    // -------------------------------------------------------
    @include blockOnPhone {
        //background: #ffe1e1;
    }
}