.marmot {
	width: 900px;
	height: 200px;
	border-bottom: 1px solid #000000;
}
.deuxiemeniveau {
	width: 1000px;
	height: 250px;
	background-color: #FF595C;
}
.core {
	width: 500px;
	float: left;
}
.marmot1 {
	float: left;
	width: 500px;
	text-align: right;
}
.marmot2 {
	text-align: left;
}
.core1 {
	text-align: right;
	float: left;
	width: 250px;
}
.core2 {
	text-align: left;
	width: 250px;
	float: left;
}
.simbad {
	width: 498px;
}