devdocs/assets/stylesheets/pages/_cppref.scss

._cppref {
  > h2, > h3 { @extend %block-heading; }
  > h4 { @extend %block-label, %label-blue; }
  .fmbox { @extend %note; }
  code, .t-mark, .t-mark-rev { @extend %label; }

  .t-li1 { margin: 0 0 1em; }

  .t-mark, .t-mark-rev {
    white-space: nowrap;
    @extend %label-green;
  }

  .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: var(--textColorLight);
  }
  .t-sdsc-nopad dl, .t-sdsc-nopad dd { margin: 0; }

  td {
    > h3, > h5 {
      margin: 0 0 .5em;
      line-height: inherit;

      &:only-child { margin: 0; }
    }

    > ul, > dl {
      margin: .5em 0;

      &:only-child { margin: 0; }
    }

    > .t-dsc-member-div > div { // utility/functional
      float: left;

      + div { margin-left: .5em; }
    }

    > table { margin: 0; }
  }

  .t-dcl-rev-aux > td:empty { padding: 0; }

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

  ul > ul { margin: 0 0 .5em; }
}