body {
  background: #111;
  color: #fff;
  font-family: sans-serif;
  text-align: center;
  padding: 2rem;
}
input, select, button {
  margin: 0.5rem;
  padding: 0.5rem;
}
a {
  color: #00f7ff;
  font-weight: bold;
}
#download-iframe {
  pointer-events: all; /* so the form still works above it */
}