#enveloppe {
	height: 780px;
	width: 900px;
	margin-top: -400px;
	margin-right: -450px;
	position: absolute;
	top: 50%;
	right: 50%;
}
* {
	margin: 0px;
	padding: 0px;
}

#slider {
	z-index: 1;
}


body {
	background-image: none;
	margin: 0px;
	padding: 0px;
	background-color: #000000;
}