anchor.diff:      script(src='javascripts/script.js')
       link(rel='stylesheet', href='stylesheets/style.css')
     body
  -    nav.navbar.navbar-inverse
  +    nav.navbar.navbar-default
         .container-fluid
           .navbar-header
             button.navbar-toggle(type='button', data-toggle='collapse', data-target='#myNavbar')
  
positive.code:             li
                a(href='#') Page 2
              li
                a(href='#') Page 3
            ul.nav.navbar-nav.navbar-right
              li
                a(href='#')
  
negative.code:           ul.nav.navbar-nav
              li.active
                a(href='#') Home
  <!--            li.dropdown
                a.dropdown-toggle(data-toggle='dropdown', href='#')
                  | Page 1 
                  span.caret
  