diff --git a/app/assets/stylesheets/helpers/_taxonomy-navigation.scss b/app/assets/stylesheets/helpers/_taxonomy-navigation.scss
index 556e770f5..17079e817 100644
--- a/app/assets/stylesheets/helpers/_taxonomy-navigation.scss
+++ b/app/assets/stylesheets/helpers/_taxonomy-navigation.scss
@@ -5,21 +5,10 @@
   border-top: 2px solid $govuk-blue;
 }
 
-.taxonomy-navigation__list-item {
-  margin-bottom: $gutter / 6;
-  padding-bottom: $gutter / 6;
-  list-style: none;
-}
-
-.taxonomy-navigation__section {
-  padding: $gutter-one-third 0 $gutter-two-thirds 0;
-  margin-top: $gutter-half;
-  border-top: 1px solid $black;
-}
-
 .taxonomy-navigation__row {
   display: flex;
   flex-wrap: wrap;
+  padding-top: $gutter-one-third;
 
   @include media(tablet) {
     margin-right: -25px;
@@ -27,22 +16,30 @@
 }
 
 .taxonomy-navigation__column {
-  @include core-16;
   @include box-sizing(border-box);
   width: 100%;
-  padding: ($gutter / 6) $gutter-one-third ($gutter-half + $gutter-one-third) 0;
+  font-size: 16px;
+  padding: ($gutter-one-third / 2) $gutter-one-third ($gutter-half + $gutter-one-third) 0;
 
   @include media(tablet) {
     width: 50%;
-    padding: ($gutter / 6) ($gutter-half + $gutter-one-third) ($gutter-half + $gutter-one-third) 0;
+    padding: ($gutter-one-third / 2) ($gutter-half + $gutter-one-third) ($gutter-half + $gutter-one-third) 0;
   }
 
   @include media(desktop) {
     width: (1 / 3) * 100%;
-    padding: ($gutter / 6) ($gutter-half + $gutter-one-third) ($gutter-half + $gutter-one-third) 0;
+    padding: ($gutter-one-third / 2) ($gutter-half + $gutter-one-third) ($gutter-half + $gutter-one-third) 0;
   }
+}
 
-  .gem-c-heading {
-    @include bold-16;
-  }
+.taxonomy-navigation__list-item {
+  margin: $gutter-one-third 0 ($gutter-one-third / 2) 0;
+  padding-bottom: $gutter-one-third / 2;
+  list-style: none;
+}
+
+.taxonomy-navigation__section {
+  padding: $gutter-one-third 0 $gutter-two-thirds 0;
+  margin-top: $gutter-half;
+  border-top: 1px solid $black;
 }
diff --git a/app/views/shared/_taxonomy_navigation.html.erb b/app/views/shared/_taxonomy_navigation.html.erb
index f5b9c819b..8da0bfc4b 100644
--- a/app/views/shared/_taxonomy_navigation.html.erb
+++ b/app/views/shared/_taxonomy_navigation.html.erb
@@ -5,7 +5,7 @@
         <%= render "govuk_publishing_components/components/heading",
                    text: 'Topics',
                    heading_level: 2,
-                   padding: true %>
+                   font_size: 19 %>
         <ul>
           <% tagged_taxons.each do |tagged_taxon| %>
             <li class="taxonomy-navigation__list-item">
@@ -20,7 +20,7 @@
           <%= render "govuk_publishing_components/components/heading",
                      text: 'Collections',
                      heading_level: 2,
-                     padding: true %>
+                     font_size: 19 %>
           <ul>
             <% related_collections.each do |base_path, title| %>
               <li class="taxonomy-navigation__list-item">