div#bloc_principal {
	width:755px;
	height:1500px;
	margin-right: auto;
	margin-left: auto;
	
	}
	

div#bandeau {
	width:755px;
	height:230px;
	}
	
div#vide1 {
	width:755px;
	height:50px;
	}	
div#menu {
	width:755px;
	height:60px;

	}
	
		
div#vide2 {
	width:755px;
	height:40px;
	}
	
div#contenu {
	width:755px;
	height:1200px;

	}