.animated {
    animation-duration: 1s;
    animation-iteration-count: infinite;
}

@keyframes tada {
    0% {
        transform: scale3d(1, 1, 1);
    }

    10%, 20% {
        transform: scale3d(.9, .9, .9) rotate3d(0, 0, 1, -3deg);
    }

    30%, 50%, 70%, 90% {
        transform: scale3d(1.1, 1.1, 1.1) rotate3d(0, 0, 1, 3deg);
    }

    40%, 60%, 80% {
        transform: scale3d(1.1, 1.1, 1.1) rotate3d(0, 0, 1, -3deg);
    }

    100% {
        transform: scale3d(1, 1, 1);
    }
}

.tada {
    animation-name: tada;
}