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

.shaking {
    animation: shake 0.5s infinite;
}