/* card column setting */
@media (max-width: 991px) {
    .card-columns {
        -webkit-column-count: 1;
        -moz-column-count: 1;
        column-count: 1;
    }
}

@media (min-width: 992px) {
    .card-columns {
        -webkit-column-count: 2;
        -moz-column-count: 2;
        column-count: 2;
    }
}