/* Rode border voor geselecteerde thumbnail */
.product-single__thumbnails .slick-current img,
.product__thumb.is-active,
.product__thumb--active,
.product-gallery__thumbnail.is-selected,
.product-gallery__thumbnail--selected,
.thumbnails__item.is-active,
.thumbnails__item--active {
  border: 6px solid #FF0000 !important;
  box-sizing: border-box;
}