body {
  text-align: center;
}
#container {
  margin: 0 auto;
  width: 512px;
}
#dropArea {
  border: 2px dashed #cccccc;
  width: 100%;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
#outputImage {
  width: 100%;
}