/*靜音鈕S*/
.et_muted_button {
    width: 50px;
    height: 50px;
    background: url(images/btn_sound-off.svg) no-repeat;
    background-size: 100% auto;
    position: absolute;
    bottom: 35px;
    left: 5px;
    transition: 0.5s;
    cursor: pointer;
    /*因為廣告AD div z-index:1111 */
    z-index: 1112;
}

.et_muted_button.hide {
    opacity: 0;
    transform: translateY(-25px);
}