se/SE/stuff/dita-ot-2.3.3/plugins/org.dita.html5/sass/_headings.scss

// Sass partial for heading (title) styles

/* Set heading sizes, getting smaller for deeper nesting */
.topictitle1 {
  font-size: 1.34em;
  margin-bottom: 0.1em;
  margin-top: 0;
}

.topictitle2 {
  font-size: 1.17em;
  margin-bottom: 0.45em;
  margin-top: 1pc;
}

.topictitle3 {
  font-size: 1.17em;
  font-weight: bold;
  margin-bottom: 0.17em;
  margin-top: 1pc;
}

.topictitle4 {
  font-size: 1.17em;
  font-weight: bold;
  margin-top: 0.83em;
}

.topictitle5 {
  font-size: 1.17em;
  font-weight: bold;
}

.topictitle6 {
  font-size: 1.17em;
  font-style: italic;
}

.sectiontitle {
  color: $text-color;
  font-size: 1.17em;
  font-weight: bold;
  margin-bottom: 0;
  margin-top: 1em;
}

.section {
  margin-bottom: 1em;
  margin-top: 1em;
}

.example {
  margin-bottom: 1em;
  margin-top: 1em;
}