@media (max-width: 849px) {
  .mfp-wrap.mfp-ready,
  .mfp-content,
  .cart-popup-inner,
  .widget_shopping_cart_content,
  .off-canvas-cart {
    overscroll-behavior: contain;
  }

  .cart-popup-title {
    position: sticky;
    top: 0;
    z-index: 20;
    background: #fff;
  }
}