.recently-viewed-products {
  position: relative;
}
.recently-viewed-products .product-grid--title {
  display: block;
}
.recently-viewed-products .grid-view-item .reveal .hidden {
  z-index: 4;
  opacity: 0;
  transition: opacity ease-in-out 250ms;
}
.recently-viewed-products .grid-view-item .grid-view-item-image:hover .reveal .hidden {
  opacity: 1;
}

/* 追加 */
@media screen and (max-width: 768px) {
  .product-grid--wrapper {
    justify-content: center;
  }
  .product-grid--wrapper .grid__item.small--one-third.medium--one-third {
    width: calc(30% - calc(var(--grid-spacing) * 0.75) / 2) !important;
  }
}