.cadre_petit {background: url(../gfx/cadrepetit_droite.png) no-repeat bottom right;}
.cadre_petit_contenu {background: url(../gfx/cadrepetit_gauche.png) no-repeat;}
.cadre_grand_contenu {background: url(../gfx/cadregrand_gauche.png) no-repeat;}
.cadre_grand {background: url(../gfx/cadregrand_droite.png) no-repeat bottom right;}