* {
	margin: 0;
	padding: 0;
	font-size: 100%;
}
html, body {
	height: 100%;
}
body {
	text-align: center;
	font-family: "游ゴシック", YuGothic, "ヒラギノ角ゴ Pro W3", "Hiragino Kaku Gothic Pro", "メイリオ", Meiryo, Osaka, "ＭＳ Ｐゴシック", "MS PGothic", Sans-Serif;
	background-image: linear-gradient(180deg,#000,#009);
	background-attachment: fixed;
}
h1 {
	background-color: rgba(255,255,255,0.6);
	font-size: 150%;
	padding: 2em;
	width: 15em;
	line-height: 1;
	height: 1.5em;
	position: absolute;
	letter-spacing: 0.2em;
	left: 0px;
	top: 0px;
	right: 0px;
	bottom: 0px;
	margin: auto;
	border-radius: 0.5em;
	border: 1px solid #ccc;
	border-right-color: #333;
	border-bottom-color: #333;
}
span {
	font-size: 50%;
	display: block;
	font-weight: normal;
}