@charset "utf-8";
/* CSS Document */
keyframes autopopup {
   from {opacity: 0;margin-top:-200px;}
   to {opacity: 1;}
}

#popup {
   background-color: rgba(0,0,0,0.8);
   position: fixed;
   top:0;
   left:0;
   right:0;
   bottom:0;
   margin:0;
   /* Animación que durará 2 segundos*/
   animation:autopopup 2s;
}