.backgroundColor{
	background-color: black;
}
#accueil {
	display: flex;
	flex-direction: column;
	align-items: center;
	margin-top: 200px;
	justify-content: center;
}
.logo{
	width: 200px;
	margin: 1em;
}
.menuaccueil{
	color : white;
}
.vertical-menu {
	width: 100px;
}

.vertical-menu a {
	background-color: black;
	color: white;
	display: block;
	padding: 12px;
	text-decoration: none;
}

.vertical-menu a:hover {
	background-color: red;
}

.vertical-menu a.active {
	background-color: red;
	color: white;
}
ul {
	list-style-type: none;
	overflow: hidden;
	background-color: #333;
	display: flex;
	justify-content: center;
}

li {
	float: left;
}

li a {
	display: block;
	color: white;
	text-align: center;
	padding: 14px 16px;
	text-decoration: none;
}

li a:hover {
	background-color: #111;
}

.active{
	background-color: grey;
}

#conteneur{
	display: flex;
	flex: wrap;
	justify-content: center;
	flex: 1;
}
#Collaboration{
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	align-items: center;
}
#Collaboration2{
	display: flex;
	flex-direction: column;
	margin: 30px;
}
h1{
	font-size: 30px;
}
.images {
    padding: 0px 30px;
}