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@media print, (overflow-block: paged) or (overflow-block: optional-paged)
{
  /* Move top-level headings to a new page on the right-hand side: */
  h1
  {
    page-break-before: right; /* CSS 2 */
    break-before: recto;      /* CSS 3+, 
      also works for languages written and paginated right-to-left */
  }
  /* Override the previous ruleset for the very first heading: */
  h1:first-of-type,
  section > h1:first-child
  {
    page-break-before: avoid; /* CSS 2 */
    break-before: avoid;      /* CSS 3+ */
  }
  /* Force second-level headings to begin in a new column or
     possiblyon a new page if it was in the last of multiple columns otherwise: */
  h2
  {
    break-before: column;
    page-break-before: always;
  }
  /* Headings should not be the last paragraph on a page: */
  h1, h2, h3, h4, h5, h6
  {
    page-break-after: avoid;
  }
  /* Consecutive headings with deepening level should not be split across pages: */
  h1+h2, h2+h3, h3+h4, h4+h5, h5+h6
  {
    page-break-before: avoid;
  }
}