.obra {  font-family: Arial, Helvetica, sans-serif; font-size: 9pt; font-weight: bold; color: #FFFFFF; text-align: centre}
a.obra:hover {  font-family: Arial, Helvetica, sans-serif; font-size: 9pt; font-weight: bold; color: #FFFFFF; text-decoration: underline; text-align: centre}