.titPres1 {
	background-image: url(/media/cn/presentation/presentation.png);
}

.Les1 {
	background-image: url(/media/cn/presentation/les.png);
}

.Env1 {
	width: 370px;
	background-image: url(/media/cn/presentation/env.png);
}

.Cont1 {
	width: 510px;
	background-image: url(/media/cn/presentation/cont.png);
}

.Conc1 {
	width: 280px;
	background-image: url(/media/cn/presentation/conc.png);
}