.menu{
	background-color: #ABABAB;
	position: fixed;
	left: 10px;
	width: 200px;
	border: 2px solid #000;
	padding-right: 10px;
	margin-right: 20px;
	}
#fleche_top{
	position: -webkit-sticky;
	position: sticky;
	top: 615px;
	margin-right: 25px;
	}
#retour_en_haut{
	position: -webkit-sticky;
	position: sticky;
	top: 674px;
	margin-right: 1px;
	text-align: right;
	font-family: Arial;
	}
ul{
	font-family: Arial;
	}
#bouton2{
	text-decoration: none;
	}
a:link{
	font-family: Arial;
	color: black;
	}
a:visited{
	color: black;
	}
a:hover{
	color: #fff;
	text-decoration: none;
	}
a:active{
	color: black;
	text-decoration: none;
	}
#conteneur{
	width: 800px;
	margin: auto;
	padding: 40px;
	background-color: #f3f3f3;
	opacity: 1;
	border-width: 2px;
	border-style: solid;
	border-color: black;
	text-align: justify;
	font-family: Arial;
	}
body{
	background: linear-gradient(
		rgba(86, 192, 224, 0.45), 
		rgba(86, 192, 224, 0.45)
	),url("fond_ecran_expose_nsi.jpg") center fixed;
	background-size: cover;
	background-repeat:no-repeat;
	}
.qcm{
	font-family: Arial;
	}
.btn_radio{
	
	}
h1{
	text-align: center;
	color:#142F5E;
	padding: 10px;
	}
#gros_titre{
	border-style: none solid solid solid;
	border-color: #000;
	border-top-width: 2px;
	border-bottom-width: 4px;
	margin-bottom: 30px;
	}
.petit-titre{
	text-indent: 20px;
	color:#43A3BB;
	}
.textes{
	display:none;
	}
.boutons{
	border-radius:10px 10px;
	height: 30px;
	display: block;
	}
.bouton1{
	border-radius:10px 10px;
	height: 30px;
	}
#bouton2{
	text-decoration: none;
	}
#bouton1{
	border-radius:10px 10px;
	height: 30px;
	}
.position_boutons{
	position: relative;
	bottom: 50px;
	right: 50px;
	}
.zoom img {
	-webkit-transition: all 1.5s ease;
	-moz-transition: all 1.5s ease;
	transition: all 1.5s ease;
	}
.zoom img:hover{
	-webkit-transform: scale(8);
	-moz-transform: scale(8);
	transform:scale(8);
	}
.zoom {
	text-align: center;
	margin-bottom: 20px;
	}
.zoom img {
	width:100px;
	}
#auditif{
	height: 50px;s
	width: 100px;
	font-size: 25px;
	margin-left: 100px;
	}
#visuel{
	height: 50px;
	width: 100px;
	font-size: 25px;
	margin-right: 100px;
	}
#alinea{
	text-indent: 20px;
	}
hr{
	text-align: left;
	width: 70%;
	height: 50%;
	border-color: #08185C;
	margin-bottom: 30px;
	}
table{
    border-collapse: collapse;
	padding: 10px;
	}
td, th{
    border: 1px solid black;
	}
.sign{
	text-align: center;
	}