解答例

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<title></title>
<style>
div#first{
	width:180px;
	height:180px;
	background-color:#0000FF;
	position:fixed;
	top:50%;
	right:50%;
	margin-top:-270px;
	margin-left:-90px;
}
div#second{
	width:180px;
	height:180px;
	background-color:#0066FF;
	position:absolute;
	top:90px;
	right:90px;
}
div#third{
	width:180px;
	height:180px;
	background-color:#1E90FF;
	position:absolute;
	top:90px;
	right:90px;
}
div#fourth{
	width:180px;
	height:180px;
	background-color:#00BFFF;
	position:absolute;
	top:90px;
	left:90px;
}
div#fifth{
	width:180px;
	height:180px;
	background-color:#33D6FF;
	position:absolute;
	top:90px;
	left:90px;
}
div#sixth{
	width:180px;
	height:180px;
	background-color:#00FFFF;
	position:absolute;
	top:-90px;
	left:90px;
}
div#seventh{
	width:180px;
	height:180px;
	background-color:#99FFFF;
	position:absolute;
	top:-90px;
	left:90px;
}
div#eighth{
	width:180px;
	height:180px;
	background-color:#CCFFFF;
	position:absolute;
	top:-90px;
	left:-90px;
}
div#ninth{
	width:90px;
	height:90px;
	background-color:#0000FF;
	position:absolute;
	top:0px;
	left:0px;
}
</style>
</head>
<body>
<div id="first">
	<div id="second">
		<div id="third">
			<div id="fourth">
				<div id="fifth">
					<div id="sixth">
						<div id="seventh">
						<div id="eighth">
							<div id="ninth">
							</div>
						</div>
						</div>
					</div>
				</div>
			</div>
		</div>
	</div>
</div>
</body>
</html>
inserted by FC2 system