.background{ background: url('https://www.certea.plateformehuissiers.fr/uploads/Fond_Site_Bleu-mobile.png'); }
@media only screen and (min-width: 601px){.background{ background: url('https://www.certea.plateformehuissiers.fr/uploads/Fond_Site_Bleu.png');}}
.background{
	background-color: transparent;
	background-size:cover;
	background-repeat:no-repeat;
	-webkit-background-size: cover;
	background-position: center;
	background-attachment: fixed;
}
@media only screen and (min-width: 601px){.favicon-background{ background: url('https://www.certea.plateformehuissiers.fr/uploads/motif_c.png');}}