@keyframes shake {
    0%, 100% { transform: translate(0, 0); }
    25% { transform: translate(-10px, 10px); }
    50% { transform: translate(10px, -10px); }
    75% { transform: translate(-10px, -10px); }
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-50%, -50%) scale(1.2); }
}