body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #000;
    color: #fff;
    overflow: hidden;
}

.hidden {
    display: none;
}

#menu, #settings, #gameOver {
    text-align: center;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

button {
    margin: 10px;
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
}

canvas {
    display: block;
    background-color: #111;
    width: 100vw;
    height: 100vh;
}