/* Mobile */
@media (max-width: 599px) {
      .gre-columns.wp-block-columns {
    flex-direction: column; /* o column, o reverse, o quello che vuoi */
  }
}

/* Tablet */
@media (min-width: 600px) and (max-width: 1023px) {
    /*.gre-columns.wp-block-columns {
    flex-direction: row !important;*/
}

/* Desktop */
@media (min-width: 1024px) {}