/* sound-control.css */
#sound-control {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    cursor: pointer;
    padding: 10px;
    background-color: #333;
    color: white;
    border-radius: 5px;
    font-family: Arial, sans-serif;
    font-size: 14px;
    user-select: none;
}

#sound-control:hover {
    background-color: #555;
}