main {
  max-width: 36rem;
  margin: 2rem auto;
  padding: 0 1rem;
  font-family: system-ui, sans-serif;
  line-height: 1.5;
}

.drop-zone {
  border: 2px dashed #888;
  border-radius: 8px;
  padding: 1.5rem 1rem;
  text-align: center;
  margin-bottom: 1rem;
}

.drop-zone.dragging {
  border-color: #2a7;
  background: #e8f7ee;
}

.drop-zone p {
  margin: 0 0 0.5rem;
  font-weight: 600;
}

.options label {
  display: block;
}

button {
  margin: 1rem 0;
  padding: 0.5rem 1.5rem;
  font-size: 1rem;
}

progress {
  display: block;
  width: 100%;
}

.error {
  color: #b00020;
}

.download {
  display: inline-block;
  font-weight: 600;
}

/* display rules above must not defeat the hidden attribute */
[hidden] {
  display: none;
}