a.azul:link {text-decoration: none; color: #000000;}
a.azul:visited {text-decoration: none; color: #000000; }
a.azul:hover {text-decoration: underline; color: #006699;}
a.azul:active {text-decoration: none; color: #000000;}

a.laranja:link {text-decoration: none; color: #000000;}
a.laranja:visited {text-decoration: none; color: #000000;}
a.laranja:hover {text-decoration: underline; color: #FF6600;}
a.laranja:active {text-decoration: none; color: #000000;}

a.preto:link {text-decoration: none; color: #000000;}
a.preto:visited {text-decoration: none; color: #000000;}
a.preto:hover {text-decoration: underline; color: #000000;}
a.preto:active {text-decoration: none; color: #000000;}