gio-android-slides/core/print.css

body {
  font-size: 18pt;
}

h1 {
  font-size: 48pt;
}

h2 {
  font-size: 36pt;
}

h3 {
  font-size: 28pt;
}

pre {
  border: 1px solid #000;
  padding: 10px;
  white-space: pre-wrap;
}

.deck-container > .slide {
  page-break-after: always;
}