@media (max-width: 640px) { /* Adjust the max-width to your mobile breakpoint */
      .row.vc_row.wpb_row.vc_row-fluid.vc_row-o-full-height.vc_row-o-columns-middle.vc_row-flex {
        height: auto !important; /* Or a smaller fixed value */
        min-height: auto !important; /* Or a smaller fixed value */
      }
    }