@keyframes shake {
    0% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(-6deg);
    }
    50% {
        transform: rotate(6deg);
    }
    75% {
        transform: rotate(-6deg);
    }
    100% {
        transform: rotate(0deg);
    }
}

.shake-on-hover:hover {
    animation: shake 0.8s ease-in-out;
}