.conteneur-flex{
	display: flex;
	flex-flox: row wrap;
	justify-content: space-around;
	background-color: rgba(120,150,240,1);
}
.element-flex{
	flex:0 1 20%;
	background-color: rgba(120,240,150,0.7);
	height:50px;
	margin: 10px;
	
	
}
@media screen and (max-width:780px){
	.conteneur-flex{
		flex-flow: column wrap;
	}
	
}