.lien-blanc {
text-decoration: none;
}
.lien-blanc:hover { 
text-decoration: underline;
}
.liens_gris {
text-decoration: none;
color:#777777;
}
.liens_gris:hover { 
text-decoration: underline;
color:#AAAAAA;
}
.liens_noir {
text-decoration: none;
color:#000000;
}
.liens_noir:hover { 
text-decoration: underline;
color:#777777;
}