.nb-product-description.expandable-content[aria-expanded="false"] {
  max-height: var(--nb-description-matched-height, var(--nb-description-collapsed-height, 400px));
}

@media screen and (max-width: 999px) {
  .nb-product-description.expandable-content[aria-expanded="false"] {
    max-height: var(--nb-description-collapsed-height, 400px);
  }
}