diff --git a/lib/jekyll/scholar/extras/bibliography_bytype.rb b/lib/jekyll/scholar/extras/bibliography_bytype.rb
index d60828fadb90ca2d1416b62e0aab82541ce0d3fd..edb1efd0e337d523ec9018ab602d88b234d5510f 100644
--- a/lib/jekyll/scholar/extras/bibliography_bytype.rb
+++ b/lib/jekyll/scholar/extras/bibliography_bytype.rb
@@ -94,7 +94,8 @@ module Jekyll
             if not repository_link_for(entry).nil?
               puts "link is not null"
               puts repository_link_for(entry)
-              reference << "<a class=\"pure-button-green\" href=\"" + repository_link_for(entry) + "\">PDF</a>"
+              pdflink = "<div class=\"pure-button csl-pdf\"><a href=\"" + repository_link_for(entry) + "\">PDF</a></div>"
+              reference.insert(reference.rindex('</div>'), pdflink.to_s )
             end
           end
 
diff --git a/lib/jekyll/scholar/extras/bibliography_hdp.rb b/lib/jekyll/scholar/extras/bibliography_hdp.rb
deleted file mode 100644
index 5e3ea9bb13e001efe59f9d0dd1ffd67a358e835f..0000000000000000000000000000000000000000
--- a/lib/jekyll/scholar/extras/bibliography_hdp.rb
+++ /dev/null
@@ -1,82 +0,0 @@
-module Jekyll
-  class Scholar
-
-    class BibliographyHDPTag < Liquid::Tag
-      include Scholar::Utilities
-      include ScholarExtras::Utilities
-  
-      def initialize(tag_name, arguments, tokens)
-        super
-
-        @config = Scholar.defaults.dup
-        @bibtex_file = arguments.strip
-      end
-
-      def render(context)
-        set_context_to context
-
-         year_section = ''
-         opts = ['@*[public!=no]']
-
-#references = public_entries.map do |entry|
-         references = get_entries(opts).map do |entry|
-          reference = ''
-          ref = ''
-
-          ref = CiteProc.process entry.to_citeproc, :style => config['style'],
-            :locale => config['locale'], :format => 'html'
-          content_tag :span, ref, :id => entry.key
-
-          if entry.field?(:year)
-            if (year_section != entry[:year])
-              reference << "<h1>"
-              reference << entry[:year].to_s
-              reference << "</h1>"
-              year_section = entry[:year]
-            end
-          end 
-
-          reference << ref
-          if generate_details?
-           reference << "<br />"
-           reference << link_to(details_link_for(entry), config['details_link'])
-           reference << "."
-          end
-
-          if entry.field?(:pdflink1) or entry.field?(:slides)
-            reference << "<b> Downloads: </b>" 
-          end 
-
-          if entry.field?(:pdflink1)
-#if config['pdf_logo'] 
-#              puts "pdf_logo"
-#              reference << "<img class=\"alignleft\" title=\"pdf\" src=" + config['pdf_logo'] +  "alt=\"\" width=\"50\" height=\"30\" />"
-#            else
-              reference << "<a href=\""  + entry[:pdflink1].to_s + "\">PDF</a>"
-#            end
-
-          end
-          
-          if entry.field?(:slides)
-#            if config['ppt_logo'] 
-#              puts "ppt_logo"
-#              reference << "<img class=\"alignleft\" title=\"ppt\" src=" + config['ppt_logo'] +  "alt=\"\" width=\"50\" height=\"30\" />"
-#            else
-              reference << "<a href=\""  + entry[:slides].to_s + "\">, Slides</a>"
-#            end
-          end
-
-          content_tag :br, reference
-        end
-
-        references.join("\n")
-#content_tag :ul, references.join("\n")
-#content_tag :li, reference
-      end
-      
-    end
-    
-  end
-end
-
-Liquid::Template.register_tag('bibliography_hdp', Jekyll::Scholar::BibliographyHDPTag)
diff --git a/lib/jekyll/scholar/extras/bibliography_year.rb b/lib/jekyll/scholar/extras/bibliography_year.rb
index 6b9e2e42692b1ea6e4ccfab0a47f7dedca92e555..1de355724c1025d7ea232d143f6be2bedeaa0dc0 100644
--- a/lib/jekyll/scholar/extras/bibliography_year.rb
+++ b/lib/jekyll/scholar/extras/bibliography_year.rb
@@ -112,7 +112,8 @@ module Jekyll
                   if not repository_link_for(entry).nil?
                     puts "link is not null"
                     puts repository_link_for(entry)
-                    reference << "<a href=\"" + repository_link_for(entry) + "\">PDF</a>"
+                    pdflink = "<div class=\"pure-button csl-pdf\"><a href=\"" + repository_link_for(entry) + "\">PDF</a></div>"
+                    reference.insert(reference.rindex('</div>'), pdflink.to_s )
                   end
                 end
                 # Content tag is dependent on type of article.
diff --git a/lib/jekyll/scholar/extras/details_hdp.rb b/lib/jekyll/scholar/extras/details_hdp.rb
deleted file mode 100644
index abd3334aac6694419e9fb2833ad1a1c1277bdd38..0000000000000000000000000000000000000000
--- a/lib/jekyll/scholar/extras/details_hdp.rb
+++ /dev/null
@@ -1,82 +0,0 @@
-module Jekyll
-  class Scholar
-
-    class Details < Page
-      include Scholar::Utilities
-      
-      def initialize(site, base, dir, entry)
-        @site, @base, @dir = site, base, dir
-
-        @config = Scholar.defaults.merge(site.config['scholar'] || {})
-
-        @name = details_file_for(entry)
-
-        process(@name)
-        read_yaml(File.join(base, '_layouts'), config['details_layout'])
-
-				liquidify(entry)
-      end
-
-			private
-			
-			def liquidify(entry)
-				data['entry'] = {}
-
-				data['entry']['key'] = entry.key
-				data['entry']['type'] = entry.type
-				
-				entry.fields.each do |key, value|
-					data['entry'][key.to_s] = value.to_s
-        end
-
-        data['entry']['bibtex'] = entry.to_s
-
-        # This is to get the CSL style output.
-        data['entry']['citeproc'] = CiteProc.process entry.to_citeproc, :style => config['style'],
-            :locale => config['locale'], :format => 'html'
-            
-#puts data['entry']['citeproc'].class
-
-        if entry.field?(:pdflink1)
-          data['entry']['pdflink1']= entry[:pdflink1].to_s
-        end
-          
-        if entry.field?(:slides)
-          data['entry']['slides']= entry[:slides].to_s
-        end
-
-
-#name = entry.key.to_s.dup
-#        name.gsub!(/[:\s]+/, '_')
-
-#        data['entry']['pdflink'] = '../pdfs/' + name.to_s + '.pdf'
-			end
-			
-    end
-
-    class DetailsGenerator < Generator
-      include Scholar::Utilities
-      safe true
-
-      attr_reader :config
-      
-      def generate(site)
-        @site, @config = site, Scholar.defaults.merge(site.config['scholar'] || {})
-
-        if generate_details?
-          entries.each do |entry|
-            details = Details.new(site, site.source, details_path, entry)
-            details.render(site.layouts, site.site_payload)
-            details.write(site.dest)
-            
-            site.pages << details
-          end
-          
-        end
-      end
-			
-    end
-
-
-  end
-end