*{
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}
.fv_banner{
	background: #ccc;
	padding: 80px;
	text-align: center;
}
.sticky_header{
	background: #eee;
	padding: 20px;
	position: sticky;
	top: 0;
	z-index: 10;
}
.sticky_header img{
	height: 60px;
}
.contents{
	background: #74D7EE;
	height: 1000px;
	margin: 60px auto 0;
	width: 1140px;
	padding: 60px;
}
.scroll_area{
	background: #ccc;
	margin-top: 60px;
	height: 1000px;
	padding: 40px;
}