@page { size: 1440px 6500px; margin: 0; }
@media print {
  html, body { width: 1440px !important; height: 6500px !important; margin: 0 !important; padding: 0 !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
  nav { position: relative !important; }
  section { page-break-after: always; }
}