#body {
	margin: 0px;
	background-color: #1e2021;
}
#conteneur {
	width: 600px;
	margin: auto;
}
#colonne_gauche {
	width: 100%;
	position: relative;
	float: left;
}
#conteneur_colonnes {
	width: 100%;
	position: relative;
	float: left;
	padding-top: 20px;
}
#bottom {
	width: 100%;
	position: relative;
	float: left;
	background-repeat: no-repeat;
}