.bils-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
}

.bils-slide {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.bils-slide--active {
    opacity: 1;
}