diff --git a/app/assets/stylesheets/bioportal.scss b/app/assets/stylesheets/bioportal.scss
index a13fd8843b..b756e6ab96 100644
--- a/app/assets/stylesheets/bioportal.scss
+++ b/app/assets/stylesheets/bioportal.scss
@@ -14,6 +14,10 @@ body{
   position: relative;
 }
 
+hr {
+  margin: 0;
+}
+
 .alignright {
   float:right;
 }
diff --git a/app/views/landscape/index.html.haml b/app/views/landscape/index.html.haml
index 315d176276..f750a88801 100644
--- a/app/views/landscape/index.html.haml
+++ b/app/views/landscape/index.html.haml
@@ -51,7 +51,7 @@
         %span#chartTooltipValue
           None
 
-    %button#propertiesBtn{:style => "margin-top: 1em;", :type => "button", :class => "btn btn-success", :onclick => "toggleDiv('properties')"}= t("landscape.more_properties_charts")
+    %button#propertiesBtn{:style => "margin-top: 1em;", :type => "button", :class => "btn btn-primary", :onclick => "toggleDiv('properties')"}= t("landscape.more_properties_charts")
 
     %hr{:style => "margin-top: 5em; margin-bottom: 5em;"}
 
@@ -158,7 +158,7 @@
         = check_box_tag "selectedRelations[]", relation, true, :id => relation
         = label_tag relation, relation
         %br
-      %button{:type => "button", :class => "btn btn-success", :onclick => "buildNetwork(ontologyRelationsArray)", :style => "margin-bottom: 1em;"}= t("landscape.filter_network")
+      %button{:type => "button", :class => "btn btn-primary", :onclick => "buildNetwork(ontologyRelationsArray)", :style => "margin-bottom: 1em;"}= t("landscape.filter_network")
 
 
   -if fairness_service_enabled?
diff --git a/app/views/notes/_new_comment.html.haml b/app/views/notes/_new_comment.html.haml
index 6cd8474203..7664085026 100644
--- a/app/views/notes/_new_comment.html.haml
+++ b/app/views/notes/_new_comment.html.haml
@@ -11,4 +11,4 @@
       %div.form-group
         %textarea.form-control.reply_body{cols: "1", name: "body", required: true, placeholder: t('notes.new_comment.comment'), rows: "1", style: "height: 100px;", tabindex: "0"}
 
-      = submit_tag t('notes.new_comment.save') , class:'btn btn-success btn-block'
+      = submit_tag t('notes.new_comment.save') , class:'btn btn-primary btn-block'
diff --git a/app/views/notes/_new_proposal.html.haml b/app/views/notes/_new_proposal.html.haml
index 649d83407c..f7b33fe8e8 100644
--- a/app/views/notes/_new_proposal.html.haml
+++ b/app/views/notes/_new_proposal.html.haml
@@ -50,4 +50,4 @@
       .form-group
         = text_field_tag 'proposal[parent]','', placeholder: t('notes.new_proposal.parent'), class: "form-control", required: true
 
-    = submit_tag t('notes.new_proposal.save') , class:'btn btn-success btn-block'
\ No newline at end of file
+    = submit_tag t('notes.new_proposal.save') , class:'btn btn-primary btn-block'
\ No newline at end of file