.carousel {
    position: relative;
    width: 600px;
    height: 400px;
    overflow: hidden;
}

.slide {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
}

/* transitions only enabled after JS adds this */
.carousel.ready .slide {
    transition: opacity 1s ease-in-out;
}

.slide.active {
    opacity: 1;
}