@keyframes bouncingA {
    12%, 23%, 28%, to {
        animation-timing-function: cubic-bezier(0.215, 0.610, 0.355, 1.000);
        transform: translate3d(0,0,0);
    }

    18%, 20% {
        animation-timing-function: cubic-bezier(0.755, 0.050, 0.855, 0.060);
        transform: translate3d(0, -8px, 0);
    }

    26% {
        animation-timing-function: cubic-bezier(0.755, 0.050, 0.855, 0.060);
        transform: translate3d(0, -6px, 0);
    }

    31% {
        transform: translate3d(0,-4px,0);
    }

    from, 33% {
        transform: translate3d(0,0px,0);
    }
}

.bouncingA {
    position: absolute;
    animation-duration: 5s;
    animation-name: bouncingA;
    animation-iteration-count: initial;
}