.titulo { font-weight: bold; text-decoration: none; background-color: #ff9900; 
color: #000000; } .columnas { text-decoration: none; background-color: #CCCCCC; 
font-family: Verdana, Arial, Helvetica, sans-serif; font-size: x-small; border: 
none #CCCCCC; } .letra {  font-family: Verdana, Arial; font-size: 12px}