#pourquoi {
	position: relative; top: 0; left: 0;
	background-color: #777;
	color: #fff;
	padding: 30px 0;
	margin-top: 30px;
	overflow: hidden;
	z-index: 1;
}

#pourquoi:before {
	content: "";
    position: absolute;
    bottom: 0px;
    left: 50%;
    margin-left: -960px;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 0 960px 470px 960px;
    border-color: transparent transparent #8c8c8c transparent;
    z-index: -1;
}

#pourquoi .texte {
	background-color: #d9d9d9;
	padding: 35px;
	color: #737373;
}

#pourquoi .texte h4 {
	position: relative; top: 0; left: 0;
	display: inline-block;
	margin-bottom: 15px;
	border-bottom: 1px solid #737373;
}

#pourquoi .bloc_bas {
	background-color: #d9d9d9;
	padding: 35px;
	color: #737373;
	margin-top: 30px;
	text-align: center;
}

#pourquoi .bloc_bas h4 {
	position: relative; top: 0; left: 0;
	display: inline-block;
	margin-bottom: 15px;
	border-bottom: 1px solid #737373;
}

@media (max-width:801px){
	#pourquoi .texte {
		margin-top: 30px;
	}
	
	#pourquoi .bloc_bas {
		text-align: left;
	}
}