#caja, #caja1, #caja2, #caja3, #caja4, #caja5, #caja6, #caja7, #caja8, #caja9, #caja10, #caja11, #caja12, #caja13, #caja14, #caja15, #caja16, #caja17, #caja18, #caja19, #caja20, #caja21, #caja22, #caja23, #caja24 {
    display: none;
    border:1px solid gray;
    width:90%;
    padding:8px;
    margin-left: 20px ;
}
#mostrar,#mostrar1,#mostrar2,#mostrar3,#mostrar4,#mostrar5,#mostrar6,#mostrar7,#mostrar8,#mostrar9,#mostrar10,#mostrar11,#mostrar12,#mostrar13,#mostrar14,#mostrar15,#mostrar16,#mostrar17,#mostrar18,#mostrar19,#mostrar20,#mostrar21, #mostrar22, #mostrar23, #mostrar24 {
/*    display:block; */
    font-size: 14px;

}