@charset "UTF-8";

.header{
	background: url(../img/index/main_bg.jpg) no-repeat center center;
	background-size: cover;
}


@media screen and (max-width: 640px) {

.header{
	background: url(../img/index/main_bg.jpg) no-repeat center center;
	background-size: cover;
	width: 100%;
}

.main_img{
	padding-top: 40%;
	padding-bottom: 35%;
}

}