* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #111;
    overflow: hidden;
}

canvas {
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
    border: 1px solid #333;
}