.letras {  font-family: Arial, Helvetica, sans-serif; font-weight: bold; font-size: 10px; color: #000000; text-align: center }

.letras2 {  font-family: Arial, Helvetica, sans-serif; font-weight: bold; font-size: 12px; color: #3300CC; text-align: center }
.letras3 {  font-family: Arial, Helvetica, sans-serif; font-weight: bold; font-size: 14px; color: #3300CC; text-align: center }