body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
    font-family: sans-serif;
}

h1 {
    margin-bottom: 20px;
    color: #333;
}

canvas {
    border: 1px solid #ccc;
    background-color: #fff;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}