#nyf-bg-audio-toggle {
    position: fixed;
    right: 20px;
    bottom: 20px;
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background: #000;
    color: #fff;
    cursor: pointer;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.8;
}

#nyf-bg-audio-toggle svg {
    width: 20px;
    height: 20px;
}

#nyf-bg-audio-toggle:hover {
    opacity: 1;
}