@CHARSET "UTF-8";
/**********************audio***********************/
.btn_music{
    display:inline-block;
    width:35px;
    height:35px;
    background:url('../images/22a26eb5a7d74059954daa4eac61e473.gif') no-repeat center center;
    background-size:100% auto;
    position:fixed;
    z-index:100;
    left:15px;
    top:20px;
    z-index:9999999;
}
.btn_music.on{
    background-image:url('../images/e1afa582ea9440d5bd0865900a0d1c51.gif');
}