.bounce {
    animation: bounce-hint .8s ease 1s infinite alternate;
}

@keyframes bounce-hint {
    0% {
        transform: translate(0, 0) scale(1);
    }

    100% {
        transform: translate(0, 0.3em) scale(1.02);
    }
}

.rotating {
    animation: rotating 8s ease 1s infinite alternate;
}

@keyframes rotating {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}