@-webkit-keyframes zoom {
    from {
        -webkit-transform: scale(1, 1);
    }

    to {
        -webkit-transform: scale(1.5, 1.5);
    }
}

@keyframes zoom {
    from {
        transform: scale(1, 1);
    }

    to {
        transform: scale(1.5, 1.5);
    }
}

.carousel-inner .item > img {
    -webkit-animation: zoom 20s;
    animation: zoom 20s;
}