diff --git a/core/themes/bartik/css/components/primary-menu.css b/core/themes/bartik/css/components/primary-menu.css
index 44de8e7..7d90a49 100644
--- a/core/themes/bartik/css/components/primary-menu.css
+++ b/core/themes/bartik/css/components/primary-menu.css
@@ -47,7 +47,9 @@
 .region-primary-menu .menu-item a.active {
   border-bottom: none;
 }
-
+.region-primary-menu .menu-item--active-trail a {
+ background: rgba(255, 255, 255, 0.5);
+}
 /* ---------- Primary Menu Toggle ----------- */
 /* Hide the toggle by default. */
 .menu-toggle,