html {
	margin: 0;
	padding: 0;
    font-family: monospace;
	font-size: 13px;
}
			
body {
	color: #000;
	background: #ccc;
	margin: 0;
	padding: 0;
}

strong {
	color: #f00;
}

#main_box {
	width: 1024px;
	margin: 0 auto;
}

header {
	background: #fff;
	height: 280px;
	border: 2px solid #333;
	border-radius: 15px;
	padding: 20px;
	margin-top: 5px;
}

header img {
	float: right;
	border-radius: 1px;
	box-shadow: 0px 0px 5px 10px #000;
}

nav {
	padding: 0 10px;
	float: left;
	border: 2px solid #333;
	border-radius: 15px;
	background: #ccc;
}

nav ul {
	list-style: none;
	padding: 0;
}

a {
	color: #000;
	text-decoration: none;
}

article a:hover {
	color: #f00;
}

nav ul a:hover {
	color: #fff;
}

#Lnavi, #Rnavi {
	float: left;
	margin: 0 72px;
}

article, footer {
	background: #fff;
	border: 2px solid #333;
	border-radius: 15px;
	padding: 20px;
	margin-top: 5px;
}

footer {
	text-align: center;
}

article h1 {
	text-align: center;
}