.statistiques{
border:0px;
background-image: url("LIEN IMAGE DU HAUT");
background-repeat: no-repeat;
background-position: center;
height:270px;}

.groupes{
background-color:#FFFFFF;border: 1px #D0D0D0 dotted;
-moz-border-radius : 5px 5px 5px 5px;
height:40px;padding-right:12px;padding-left:14px;padding-bottom:3px;
font-size:15px;font-weight: bold;text-align:center;
text-decoration: none !important;}