body {
    background-color: #222;
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

canvas {
    border: 1px solid #0f0;
    background-color: #000;
}

h1 {
    margin-bottom: 10px;
}