diff --git a/frontend/resources/styles/main/partials/viewer-thumbnails.scss b/frontend/resources/styles/main/partials/viewer-thumbnails.scss
index 22477cb822..76e1f780b3 100644
--- a/frontend/resources/styles/main/partials/viewer-thumbnails.scss
+++ b/frontend/resources/styles/main/partials/viewer-thumbnails.scss
@@ -185,3 +185,7 @@
   grid-column: 1 / span 1;
   z-index: 11;
 }
+
+.thumbnail-close.invisible {
+  display: none;
+}