body {
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #000;
    color: #fff;
}

#gameCanvas {
    border: 1px solid #fff;
}

#scoreBoard {
    position: absolute;
    top: 10px;
    left: 10px;
    font-size: 20px;
}