body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #f7f7f7;
    font-family: Arial, sans-serif;
}

.game-container {
    position: relative;
}

#gameCanvas {
    border: 2px solid #535353;
    background-color: #fff;
    display: block;
}

#score {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 20px;
    font-weight: bold;
    color: #535353;
}

#gameOver {
    position: absolute;
    width: 100%;
    text-align: center;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 24px;
    font-weight: bold;
    color: #535353;
    display: none;
}