._underscore {
  padding-left: 1rem;

  > h1, > h2, .header { margin-left: -1rem; }
  > h2 { @extend %block-heading; }

  .header {
    display: inline-block;
    vertical-align: top;
    margin-bottom: 1em;
  }

  > p[id] { margin-top: 2rem; }
  > pre { margin-top: 1em; }

  .header + code {
    margin-left: 1em;
    @extend %label;
  }

  .alias {
    margin-left: 1em;
    font-style: italic;
  }
}