body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #121212;
    filter: contrast(2) brightness(0.9);
}

canvas {
    border: 1px solid #000;
}

#gameCanvas {
}

button {
    padding: 20px 40px;
    font-size: 24px;
    border-radius: 10px;
    background-color: #CCCCCC;
    border: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 10px #ffffff;
}