#audio_btn {
    width: 35.1563px;
    height: 35.1563px;
    top: 17.5781px;
    right: 17.5781px;
    position: absolute;
    background-image: url(../../images/music_icon.png);
    background-repeat: no-repeat;
    background-size: contain;
    z-index:1111;
}

.rotate {
    -webkit-animation: rotating 3s linear infinite;
    animation: rotating 3s linear infinite;
    animation-play-state: running;
    -webkit-animation-play-state: running; /* Safari 和 Chrome */
}

.rotate-pause {
    animation-play-state: paused;
    -webkit-animation-play-state: paused; /* Safari 和 Chrome */
}

@-webkit-keyframes rotating {
    from {
        -webkit-transform: rotate(0)
    }

    to {
        -webkit-transform: rotate(360deg)
    }
}

@keyframes rotating {
    from {
        transform: rotate(0)
    }

    to {
        transform: rotate(360deg)
    }
}

@-moz-keyframes rotating {
    from {
        -moz-transform: rotate(0)
    }

    to {
        -moz-transform: rotate(360deg)
    }
}