body {
	font-family: Verdana, "游ゴシック", YuGothic, "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
	margin: 0px;
	background-color: #000000;
	overflow: hidden;
}

#fullscreenbtn {
	display: block;
	position: absolute;
	width: 120px;
	opacity: 0.8;
	bottom: 0;
	right: 0;
	z-index: 100;
	padding: 10px;
	background-color: #333;
	font-size: 14px;
	text-align: center;
	color: #ededed;
	font-weight: bold;
	box-sizing: border-box;
	border: #ededed solid 3px;
	cursor: pointer
}