@media screen and (min-width: 641px){
	div.ContentsArea {
		max-width: 800px;
	}
}
@media screen and (max-width:640px){
	body{
		margin:0;
	}

	div.ContentsArea {
		width: 100%;
	}
}

/* 共通 */
body {
	background-color: gray;
}

p {
	margin: 0;
}

H1 {
	background-color: rgba(0, 0, 0, 0.65);
	border-radius: 5px;
	padding: 2px 2px;
	margin-top: 0.125em;
	color: red;
}

H2 {
	padding: 0px 5px;
	margin: 0px;
	border: 1px solid black;
	border-radius: 5px;
}

div.ContentsArea{
	border: 2px solid gray;
	margin: 0 auto;
	padding: 0.25em 0.5em;
	border-radius: 5px;
	background-color: #fefefb;
	box-shadow:0px 0px 5px;
}

div#ToTopPage {
	text-align: right;
	margin: 10px 0px;
	padding-top: 3px;
	border-top: 1px solid black;
}

div.ContentsBlock {
	width: 100%;
	position: relative;
}

div.Comment {
	margin-left: 5px;
	margin-right: 5px;
	margin-bottom: 10px;
}


hr {
	height: 1px;
	border: none;
	border-top: 1px solid black;
}