.griglia {
border-top: 1px solid #000000;
border-right: 1px none #000000;
border-bottom: 1px none #000000;
border-left: 1px solid #000000;
}
.griglia td {
border-top: 1px none #000000;
border-right: 1px solid #000000;
border-bottom: 1px solid #000000;
border-left: 1px none #000000;
font-family: Arial, Helvetica, sans-serif;

}