@charset "utf-8";
/* CSS Document */

#contents {
	max-width:768px;
	margin:0 auto;
}
#contents img {
	max-width:100%;
	height:auto;
}

#btn_top {
	width:50px;
	height:50px;
	line-height:50px;	
	position:fixed;
	right:20px;
	bottom:20px;
}
#btn_top a {
	width:100%;
	height:100%;
	display:block;
	background-color:rgba(217,98,32,0.8);
	color:#FFF;
	text-decoration:none;
	border-radius:5px;
	text-align:center;
	font-size:24px;
}
@media print, screen and (max-width: 768px){
	#btn_top {
		width:40px;
		height:40px;
		line-height:40px;
	}
}