#drop_zone, #drop_zone_backbone {
  border: 5px solid #008484;
  width: 500px;
  height: 200px;
  margin-left: 0px;
  margin-top: 35px;
  overflow-y: scroll;
}

#message {
  height: 50px;
}

#drop_zone p, #drop_zone_backbone p {
  font-size: larger;
  text-align: center;
}

#drop_zone img, #drop_zone_backbone img{
  display: block;
  height: 50px;
  margin: 50px auto 0px;
}

#buttons_div {
  width: 500px;
  margin: 10px auto 50px;
}

/*button {
  margin-top: 20px;
}*/

#trimal {
  margin-top: 25px;
}

#drop_zone_backbone {
  display: none;
}