.arrplan {  background-image: url(fond_onglet_contour.jpg); background-repeat: no-repeat}
.centrale-landi {  background-attachment: fixed; background-image: url(../Actualites/Images/centralebis.jpg); background-repeat: no-repeat; background-position: right top}
.blocs {  background-attachment: fixed; background-image: url(../Actualites/Images/blocs.jpg); background-repeat: no-repeat; background-position: right top}
.lien {  text-decoration: none}