@keyframes violentShake {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    10%, 30%, 50%, 70%, 90% { transform: translate(-10px, 5px) rotate(-5deg); }
    20%, 40%, 60%, 80% { transform: translate(10px, -5px) rotate(5deg); }
}

.shake {
    animation: violentShake 0.1s infinite;
}