.testo
{
	font-family:Arial, Helvetica, sans-serif;
	font-size:10px;
	color:white;
	text-decoration:none;
}

.testo:hover
{
	font-family:Arial, Helvetica, sans-serif;
	font-size:10px;
	color:black;
	background:white;
	text-decoration:none;
}