devdocs/assets/stylesheets/pages/_coffeescript.scss

._coffeescript {
  padding-left: 1rem;

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

  code { @extend %label; }

  // CoffeeScript / JavaScript code blocks
  > .code {
    margin: 1.5em 0;
    overflow: hidden;

    > pre {
      float: left;
      width: 49%;
      margin: 0;
      @extend %border-box;

      &:last-child { float: right; }
    }
  }
}