@media (max-width: 900px) {
  .return-drag { grid-template-columns: 1fr; }
  .drag-stage { min-height: auto; padding: 25px 0; }
  .drag-arrow, .drag-arrow:nth-of-type(4) { display: grid; height: 34px; border: 0; border-top: 1px solid rgba(37,36,34,.16); border-bottom: 1px solid rgba(37,36,34,.16); transform: rotate(90deg); }
}