anchor.diff:        +forms()
     section#interactive-elements
       h2 Interactive Elements
  +    figure(class=classnames.figure)
  +      details
  +        summary Integer at lacus et diam tristique #[code(class=classnames.code) details summary] suscipit.
  +        | Aenean consectetur #[code(class=classnames.code) details] suscipit urna, non vehicula lacus blandit et.
       if appending['interactive-elements']
         +interactive-elements()
  
positive.code:     form
        figure(class=classnames.figure)
          fieldset
            legend single line text inputs
            input(type="text" placeholder="input type text")
            input(type="email" placeholder="input type email")
  
negative.code:           }
          }
      figure(class=classnames.figure)
        figure
          | Aenean consectetur #[code(class=classnames.code) figure] suscipit urna, non vehicula lacus blandit et.
          figcaption Integer at lacus et diam tristique #[code(class=classnames.code) figure] #[code(class=classnames.code) figcaption] suscipit.
      figure(class=classnames.figure)
        blockquote Donec #[code(class=classnames.code) blockquote] vel dolor ut felis dapibus ultricies vitae a nibh.
  