diff --git a/app/assets/stylesheets/common/components/keyboard_shortcuts.scss b/app/assets/stylesheets/common/components/keyboard_shortcuts.scss
index 3244db28ada..944b797621b 100644
--- a/app/assets/stylesheets/common/components/keyboard_shortcuts.scss
+++ b/app/assets/stylesheets/common/components/keyboard_shortcuts.scss
@@ -5,10 +5,13 @@
 
 .topic-list tr.selected td:first-child,
 .topic-list-item.selected td:first-child,
-.latest-topic-list-item.selected,
+.latest-topic-list-item.selected {
+  box-shadow: inset 3px 0 0 $danger; // needs to be inset for Edge
+}
+
 .featured-topic.selected,
 .topic-post.selected {
-  box-shadow: -3px 0 0 $danger;
+  box-shadow: inset 3px 0 0 $danger; // needs to be inset for Edge
 }
 
 .latest .featured-topic {