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

#gameCanvas {
    border: 2px solid black;
    background-color: black;
}

.buttons {
    position: absolute;
    display: flex;
    flex-direction: row;
    justify-content: center;
    bottom: 20px;
    left: 20px;
    right: 20px;
    padding: 20px;
}

.btn {
    width: 50px;
    height: 50px;
    margin: 10px 0;
    background-color: brown;
    border: none;
    color: black;
    font-size: 20px;
    cursor: pointer;
    border-radius: 5px;
}

#score {
    position: absolute;
    top: 10px;
    left: 10px;
    font-size: 20px;
    color: black;
}

#gameOverScreen {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: none;
    text-align: center;
}

.gameOverButton {
    padding: 10px 20px;
    font-size: 20px;
    margin: 10px;
    cursor: pointer;
}