devdocs/assets/stylesheets/pages/_cakephp.scss

._cakephp {
  h2 { @extend %block-heading; }

  h3 { @extend %block-label, %label-blue; }

  h3 > a { float: right; }

  h3 > a,
  span.label,
  span.php-keyword1 {
    font-weight: normal;
  }

  .tree > dd { margin-left: 0px; }
  .list { margin-left: 20px; }
}