header{font-family:Arial,serif;
	margin-left:200px;
	margin-top:0px;
	height:122px;
	
}
body{font-family:Arial,serif;
	background-color: rgb(50%,0%,0%);
	

}
h1{
	color : black;
	text-align : center;
	padding-top : 20px;
	padding-bottom:20px;
}
aside{
	margin-top:5px;
	margin-left:0px;
	padding-left:0px;
	background-color:rgb(50%,0%,0%);
	text-align : left;
	top:0px;
	width: 180px;
	height:100%;
	position : absolute;
}
article{
	background-color:silver;
	margin-left:150px;
	padding-left:50px;
	padding-top:50px;
	width:100%;
	height:1300px;
	
}
.gris{
	background-color : silver;
}