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

.game-heading {
    color: yellow;
    margin-bottom: 20px;
}

.game-container {
    border: 5px solid #fff;
    padding: 10px;
    background-color: #000;
    display: flex;
    justify-content: center;
    align-items: center;
}

canvas {
    background-color: #000;
}