diff --git a/app/helpers/wiki_pages_helper.rb b/app/helpers/wiki_pages_helper.rb
index cc542e8f5..312ec4f8b 100644
--- a/app/helpers/wiki_pages_helper.rb
+++ b/app/helpers/wiki_pages_helper.rb
@@ -14,10 +14,10 @@ module WikiPagesHelper
   end
 
   def wiki_page_post_previews(wiki_page)
-    tag.div(id: "wiki-page-posts") do
+    tag.section(id: "wiki-page-posts", class: "posts-container") do
       if Post.fast_count(wiki_page.title) > 0
         view_all_link = link_to("view all", posts_path(tags: wiki_page.title))
-        header = tag.h2("Posts (#{view_all_link})".html_safe)
+        header = tag.h2("Posts (#{view_all_link})".html_safe, class: "posts-container-header")
         header + wiki_page.post_set.presenter.post_previews_html(self)
       end
     end
diff --git a/app/javascript/src/styles/common/thumbnails.scss b/app/javascript/src/styles/common/thumbnails.scss
index 3bc45b444..7330aae00 100644
--- a/app/javascript/src/styles/common/thumbnails.scss
+++ b/app/javascript/src/styles/common/thumbnails.scss
@@ -20,6 +20,10 @@ section.posts-container {
   @include window-larger-than($thumb-desktop-breakpoint) {
     grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
   }
+
+  h2.posts-container-header {
+    grid-column: -1 / 1;
+  }
 }