.is-style-slider-gradient.wp-block-splide-carousel__container,
.is-style-slider-gradient.splide {
    -webkit-mask-image: linear-gradient(90deg, rgba(255, 255, 255, 0) 5.75%, #fff 21.29%, #fff 82.54%, rgba(255, 255, 255, 0) 96.07%);
    mask-image: linear-gradient(90deg, rgba(255, 255, 255, 0) 5.75%, #fff 21.29%, #fff 82.54%, rgba(255, 255, 255, 0) 96.07%);
}

.is-style-slider-gradient .wp-block-splide-carousel .splide__slide img,
.is-style-slider-gradient.splide .splide__slide img {
    filter: grayscale(1);
}