body {
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: #f0f0f0;
    font-family: sans-serif;
    margin-top: 20px;
}

canvas {
    background-color: #e0e0e0;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.instructions {
    margin-top: 15px;
    background: white;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-align: center;
}

.instructions h3 {
    margin-top: 0;
}