anchor.diff:  
   mixin column(artist)
       div(class='col-sm-4 text-center')
  -        h1= artist.name
           if artist.match
               iframe(
                   src="https://embed.spotify.com/follow/1/?uri=spotify:artist:"+ artist.match +"&size=detail&theme=light"
  
positive.code:                 allowtransparency="true"
              )
          else
              h2= artist.name + " has no match."
  
  mixin pages(pageInfo)
      div(class="row")
  
negative.code:         div(class="panel panel-default")
              div(class="panel-body")
                  a(href="/follow/all?page=" + page, class="btn btn-primary") Follow all artists on page
                  p(class="pull-right") Note that the buttons below always say follow, even if you already follow the artist.
  