body {
    background: #171717;
    color: #fff;
    font-family: 'Segoe UI', Arial, sans-serif;
    text-align: center;
    margin: 0;
    padding: 0;
}

h1 {
    margin-top: 25px;
    font-size: 2.5em;
    letter-spacing: 2px;
}

#gameContainer {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 80vh;
}

#pong {
    background: #222;
    border: 3px solid #fff;
    box-shadow: 0 0 20px #000a;
    display: block;
}