#wrap, #header, #container, #footer{
	float:left;
	width:100%;
}

#header{
	height:142px;
}

#container{
	height:calc(100vh - 142px);
	background:#002866;
}

#container.sub{
	background:url("/images/background_image.jpg") no-repeat center center / cover ;
}

@media screen and (max-width:760px){
	#header{
		height:100px;
	}

	#container{
		height:calc(100vh - 100px);
	}
}