.carousel {
    position: relative;
    width: 350px;
    height: 350px;
    transform-style: preserve-3d;
    transform: rotateX(-30deg);
    margin: 0px auto;
    animation: carousel 20s linear infinite;
}

.carouselRev {
    position: relative;
    width: 350px;
    height: 350px;
    transform-style: preserve-3d;
    transform: rotateX(-30deg);
    margin: 0px auto;
    animation: carouselRev 12s linear infinite;
}

@keyframes carousel {
    0% {
        transform: rotateX(-5deg) rotateY(0deg);
    }
    /*50% {
        transform: rotateX(50deg) rotateY(180deg);
    }*/

    100% {
        transform: rotateX(-5deg) rotateY(360deg);
    }
}

@keyframes carouselRev {
    0% {
        transform: rotateX(-5deg) rotateY(0deg);
    }
    /*50% {
        transform: rotateX(50deg) rotateY(180deg);
    }*/

    100% {
        transform: rotateX(-5deg) rotateY(-360deg);
    }
}

.carousel h2 {
    position: absolute;
    top: 10px;
    left: 20%;
    font-size: 1em;
    color: #fff;
}

.carousel img, .carouselRev img {
    max-width: 350px;
    max-height: 350px;
    margin-left: 0;
}

.carousel div, .carouselRev div {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
}

    .carousel div span, .carouselRev div span {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        /*transform: rotateY(calc(120deg * var(--i))) translateZ(350px);*/
        transform: rotateY(calc(120deg * var(--i))) translateZ(100px);
    }