#carousel {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 500ms ease-in-out;
    display: none;
    z-index: 1;
    will-change: opacity, transform;
}

.slide.active {
    display: block;
    z-index: 2;
    animation: slideIn 600ms ease-out;
    animation-fill-mode: forwards;
}