/******************************************************************************
 *	ドキュメント構造定義
 ******************************************************************************/
@media screen and (max-width:400px){
	div#PageContents > div.ContentBlock{
		width:100%;
	}
}
@media screen and (min-width:401px) and (max-width: 767px){
	div#PageContents > div.ContentBlock{
		width:50%;
	}
}
@media screen and (min-width: 768px){
	div#PageContents > div.ContentBlock{
		width:25%;
	}
}

div#PageHeader{
	min-height: 500px;
}

div#BannerText{
	position: relative;
	margin-top: 2em;
	text-align: center;
	font-size: 200%;
}

/* コンテンツ */
div#PageContents > div.ContentBlock{
	position:relative;
	display:inline-block;
	background-color:lightgray;
	height:200px;
	margin:0;
}

div#Content1{
	background-image: url("Imgs/a1180_016260.jpg");
	background-size: cover;
}

div#Content2{
	background-image: url("Imgs/a0150_000168.jpg");
	background-size: cover;
}

div#Content3{
	background-image: url("Imgs/a1180_010631.jpg");
	background-size: cover;
}

div#Content4{
	background-image: url("Imgs/a0040_000013.jpg");
	background-size: cover;
}