.detail-return {
  display: flex;
  justify-content: center;
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.detail-return .primary {
  min-width: min(100%, 280px);
}

@media (max-width: 600px) {
  .detail-return .primary { width: 100%; }
}