body {
	text-align: center;
}

div {
	border: 1px solid gray;
}

#main {
	width: 780px;
	margin: auto;
	text-align: justify;
}

#head {
	padding: 5px;
}

#menu {
	width: 200px;
	float: left;
	background-color: yellow;
}

#contenu {
	margin-left: 220px;
	padding: 5px;
}

#footer {
	clear: both;
}