body  {font-family: Arial; background-color: #1a1a00; color: white}
h1    {font-size: 1.5em; background-color: #ffffff; color: black}
p     {background-color: #CCC;}
#caja {background: linear-gradient(to top, rgba(50, 116, 45, 1) 0%, rgba(239, 239, 210, 1)100%);}
#sub  {font-size: 0.95em; background-color: #1a1a00;}