body {
  max-width: 1024px;
  margin: 0 auto;
}

.row {
  padding-top: 20px;
}

.well {
  margin: 10px;
}

p {
  margin: 0;
}

#pdf_download {
  position: absolute;
  top: 5px;
  right: 5px;
}

.drop-zone {
  position: relative;
  width: 500px;
  height: 500px;
  margin: 40px auto;
  text-align: center;
  border: 2px dashed #888;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  cursor: pointer;
}

.drop-zone.over {
  border-color: green;
  background: #509950;
  color: white;
}

.drop-zone input[type="file"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}