body {
    background: #222;
    color: #fff;
    text-align: center;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

h1 {
    margin-top: 24px;
    margin-bottom: 16px;
    font-size: 2rem;
    letter-spacing: 2px;
}

#pong {
    background: #111;
    border: 4px solid #fff;
    display: block;
    margin: 0 auto 32px auto;
    box-shadow: 0 0 20px #000;
}