@charset "UTF-8";
.mov_back .container.mov_back {
	background-color: #000000;
	height: 100vh;
}
.container.mov_back {
	width: 100%;
	height: 100%;
}
.container.mov_back video {
	width: 720px;
	display: block;
	margin: 10vh auto;
}

.back_rtn {
	margin: auto;
	display: block;
}