.js-movie_btn{
	position:absolute;
	top:1em;
	right:1em;
	width:32px;
	height:32px;
	overflow:hidden;
	display:flex;
	justify-content:center;
	align-items:center;
}
.js-movie_btn:before{
	content:"";
	display:block;
	width:100%;
	padding-top:100%;
	background: 0 0/cover no-repeat;
}
.js-movie_btn span {
	display:block;
	width:100%;
	height:100%;
	display:none;
}
.js-movie_btn.--off:before {
	background-image: url('../img/ico-sound_off.svg');
}
.js-movie_btn.--on {
	background-image: url('../img/ico-sound_on.svg');
}