#body {
	background-color: #F0F8FF;
}
#node_main {
	margin-right: auto;
	margin-left: auto;
	width: 500px;
}
#node_column {
	width: 100%;
	position: relative;
	float: left;
}
#titre_page {
	margin-top: 20px;
	width: 100%;
	position: relative;
	float: left;
}
#bottom_page {
	margin-top: 10px;
	margin-bottom: 20px;
	width: 100%;
	position: relative;
	float: left;
}
#colonne {
	width: 100%;
	position: relative;
	float: left;
}