html {
	height: 100%
}
body {
	height: 500%
}
.wrapper {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	display: none
}

.wrapper-1 .bg-video {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	display: none;
	background: url(../images/index/v_back.jpg);
	background-size: cover
}



.wrapper-video .bg-video {
	display: block
}