body {
	overflow-x: hidden;
	margin: 0;
	font-family: arial;
	background-color: #FFE97F;
}
li {
	text-transform: uppercase;
}
#banniere_1 {
	display: flex;
	background-color: #009B0E;
	height: 50px;
	width: 100%;
	justify-content: center;
	padding-bottom: 20px;
}
#img1 {
	width: 50px;
	height: 50px;
	margin: 10px;
}		
#banniere_1 h1 {
	text-align: center;
	font-weight: bold;
	color: #FFFFFF;
	top: auto;
	margin: 20px;
}
#img2 {
	width: 50px;
	height: 50px;
	margin: 10px;
}	

#menu {
	width: 100%;
	height: 80px;
	position: relative;
	background-color: #8CFF00;
}

#menu ul {
	float: left;
	left: 50%;
	position: relative;
	padding-top: 5px;
	margin-left: -60px;
}

#menu ul li {
	margin-left: 20px;
	float: left;
	list-style-type: none;
	position: relative;
	left: -50%;
}

#menu ul li a {
	text-align: center;
	padding-top: 10px;
	display: inline-block;
	background-color: #009B0E;
	height: 30px;
	width: 140px;
	color: white;
	text-decoration: none; 
}

#menu ul li a:hover {
	color: white;
	background-color: #007A0E;
}

#menu #en-cours a{
	background-color: #007A0E;
	font-weight: bold;
	color: white;
}

#banniere_4 {
	display: flex;
	background-color: #FFE97F;
	margin-top: 21px;
	margin-bottom: 20px;
	height: 50px;
	width: 100%;
	justify-content: center;
}

#banniere_4 h2 {
	text-align: center;
	font-weight: bold;
	color: #009B0E;
	top: auto;
}

/*#img3 {
	position: absolute; /* postulat de départ */
  	top: 50%; left: 50%; /* à 50%/50% du parent référent */
  	transform: translate(-50%, -50%); /* décalage de 50% de sa propre taille */
}