anchor.diff:              li
                 a( href="#" ) Lorem ipsum
                 
  -      div( class="col-xs-3" )
  +      div( class="col-md-3 col-xs-12" )
           div( class="box-footer" )
             h3( class="title" ) Title Box
             ul( class="list list-icon icon-arrow" )
  
positive.code:             li
                a( href="#" ) Lorem ipsum
                
        div( class="col-xs-3" )
          div( class="box-footer" )
            h3( class="title" ) Title Box
            ul( class="list list-icon icon-caret" )
  
negative.code: footer( class="footer" )
    div( class="container" )
      div( class="row" )
        div( class="col-md-3 col-xs-12" )
          div( class="box-footer" )
            h3( class="title" ) Title Box
            ul( class="list list-icon icon-angle" )
  