picocss/docs/scss/content/_typography.scss

/**
 * Docs: Typography
 */

section > hgroup {
  margin-bottom: calc(var(--typography-spacing-vertical) * 2);
}

a[role=button] {
  margin-right: calc(var(--typography-spacing-vertical) / 4);
  margin-bottom: var(--typography-spacing-vertical);
}

[role=document] {
  section > h1,
  section > h2,
  section > h3 {
    line-height: 1;
  }
}