@-webkit-keyframes show {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
body {
  text-align: center;
}
#drop-anywhere {
  line-height: 500px;
  text-align: center;
  color: white;
  display: none;
}
#drop-anywhere::before {
  content: 'Drop to upload!';
}
#drop-anywhere.show {
  -webkit-animation: show 300ms;
}