#main .soundBtn {
width: 46px;
height: 46px;
text-indent: 100%;
white-space: nowrap;
overflow: hidden;
cursor: pointer;
background-repeat: no-repeat;
background-position: center center;
background-image: url(../img/audio_stop.png);
display: block;
position: absolute;
right: 30px;
margin-top: 0em;
margin-right: 0em;
margin-bottom: 0em;
margin-left: 0em;
z-index: 500;
bottom: 30px;
background-size: 46px 46px;
}
#main .soundBtn.clicked {
background-repeat: no-repeat;
background-position: center center;
background-image: url(../img/audio_play.png);
background-size: 46px 46px;
}