.haut_gauche {
float: left;
width: 20px;
height: 50px;
background: url(../img/haut_gauche.jpg);
background-repeat: no-repeat;
background-position: top left;
}

.haut_droite {
float: right;
width: 20px;
height: 50px;
background: url(../img/haut_droite.jpg);
background-repeat: no-repeat;
background-position: top right;
}


#footer .bas_gauche {
float: left;
width: 20px;
height: 105px;
background: url(../img/bas_gauche.jpg);
background-repeat: no-repeat;
background-position: bottom left;
}

#footer .bas_droite {
float: right;
width: 20px;
height: 105px;
background: url(../img/bas_droite.jpg);
background-repeat: no-repeat;
background-position: bottom right;
}