.img-shell--loading {
  background:
    linear-gradient(110deg, #f0f0f0 8%, #ffffff 18%, #f0f0f0 33%);
  background-size: 200% 100%;
  animation: img-shimmer 1.4s linear infinite;
}

.product-img.img-shell--loading,
.sim-img.img-shell--loading,
.home-new-card__img.img-shell--loading,
.cat-card__media.img-shell--loading,
.nav-block-card__media.img-shell--loading,
.catalog-subcat-card__media.img-shell--loading,
.main-img.img-shell--loading {
  background:
    linear-gradient(110deg, #f0f0f0 8%, #ffffff 18%, #f0f0f0 33%);
  background-size: 200% 100%;
  animation: img-shimmer 1.4s linear infinite;
}

@keyframes img-shimmer {
  to {
    background-position: -200% 0;
  }
}