A:link {text-decoration: none; color: black;}
A:visited {text-decoration: none; color: black;}
A:hover {text-decoration: underline overline; color: black; background:trasparent;}



.bianco {text-decoration: none; color: #ffffff;}

.bianco:link {text-decoration: none; color: #ffffff;}
.bianco:visited {text-decoration: none; color: #ffffff;}
.bianco:hover {text-decoration: underline overline; color: #ffffff; background:trasparent;}