.page {
    animation: paging 0.7s linear infinite;
    transform-origin: left;
}

@keyframes paging {
    0% {
        transform: rotateY(0deg) skewY(0deg);
    }

    50% {
        transform: rotateY(90deg) skewY(-20deg);
    }

    100% {
        transform: rotateY(180deg) skewY(0deg);
    }
}