diff --git a/lib/philomena_web/templates/image/_image_container.html.slime b/lib/philomena_web/templates/image/_image_container.html.slime
index ac6fc929..8506cda3 100644
--- a/lib/philomena_web/templates/image/_image_container.html.slime
+++ b/lib/philomena_web/templates/image/_image_container.html.slime
@@ -1,4 +1,4 @@
-.image-container.thumb
+.image-container class=@size
   = cond do
     - @image.duplicate_id ->
       .media-box__overlay