body {
  background: #393d48;
}

#drop_zone {
  position: absolute;
  left: 0px;
  top: 0px;
  width: 480px;
  height: 500px;
  background-repeat: no-repeat;
  background-position: 50% 50%;
}
textarea {
  position: absolute;
  left: 480px;
  top: 0px;
  width: 480px;
  height: 500px;
}