@media (max-width: 639px) {
  #nav-price + section ul.grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  #nav-price + section ul.grid > li {
    margin: 0;
    padding: 16px 14px;
    min-width: 0;
  }
}