devdocs/assets/stylesheets/pages/_c.scss

._c {
  > h2, > h3 { @extend %block-heading; }
  > h4 { @extend %block-label, %label-blue; }
  > p > code { @extend %label; }

  .t-dcl-begin pre {
    margin: 0;
    padding: 0;
    line-height: inherit;
    background: none;
    border: 0;
  }

  .t-lines > span { display: block; } // numeric/fenv, string/byte, etc.

  .t-spar { // language/switch, language/for, etc.
    font-style: italic;
    color: $textColorLight;
  }
  .t-sdsc-nopad dl, .t-sdsc-nopad dd { margin: 0; }

  td > h5 {
    margin: 0;
    line-height: inherit;
  }

  .t-inheritance-diagram {
    display: table;
    margin: 1rem 0;
    padding: .375rem;
    font-size: .75rem;
    border: 1px solid $boxBorder;
    border-radius: 2px;
  }
}