body {
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: white;
    overflow: hidden;
    font-family: 'Arial', sans-serif;
}

#gameCanvas {
    background-color: #f0f0f0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    border-radius: 10px;
}

@keyframes shake {
    0% { transform: translate(0, 0); }
    20% { transform: translate(-2px, 0); }
    40% { transform: translate(2px, 0); }
    60% { transform: translate(-2px, 0); }
    80% { transform: translate(2px, 0); }
    100% { transform: translate(0, 0); }
}

#gameCanvas.shake {
    animation: shake 0.2s ease-in-out;
}