body{
	margin: 0;
	padding: 0;
	font-size: 12px;
	color:#666666;
}

#container{
	position: absolute;
	top: 50%;
	left: 50%;
	width: 877px;
	height: 680px;
	margin-left: -438px; /* widthの半分 */
	margin-top: -400px;  /* heightの半分 */
}

#pdf{
	width: 877px;
	height: 40px;
	text-align: right;
}

#main{
	clear: both;
	width: 877px;
	height: 640px;
}

#prev{
	float: left;
	width: 100px;
	height: 20px;
	text-align: left;
}

#copyright{
	float: left;
	width: 677px;
	height: 20px;
	text-align: center;
	font-size: 10px;
	letter-spacing: 2px;
	font-family: Arial, Helvetica, sans-serif;
}

#next{
	float: left;
	width: 100px;
	height: 20px;
	text-align: right;
}