html{
	background-color: black;
	color: grey;
}
body{
	background-color: black;
	color: grey;
	text-align:justify;
	font-size:120%;
}
h1 {	
	text-align:center;
	font-size:170%;
	color: silver;
	background-color: black;
}
h2{
	text-align:left;
	color: silver;
	font-size:150%;
	background-color: black;
}

a:hover{
	color: silver;
}

acronym:hover{
	color:silver;
}

a{
	color: grey;
}

.footer {	
	text-align:center;
	position: absolute;
	bottom: 0;
	}
table{
        border:1px;
        margin-left:auto;
        margin-right:auto;
        width:100%;
	margin-top: 50px;
}

.centrage{
	text-align: center;
	margin-left: auto;
   margin-right: auto;
   width: 100%:
	background-color: black;
}