diff --git a/core/themes/bartik/css/components/vertical-tabs.component.css b/core/themes/bartik/css/components/vertical-tabs.component.css
index 21231cf..4be47e0 100644
--- a/core/themes/bartik/css/components/vertical-tabs.component.css
+++ b/core/themes/bartik/css/components/vertical-tabs.component.css
@@ -1,5 +1,10 @@
 /* Vertical Tabs Reset */
 ul.vertical-tabs-list {
-  margin: -1px 0 -1px -15em;
+  margin: -1px 0 -1px -15em; /* LTR */
+  padding: 0;
+}
+[dir="rtl"] ul.vertical-tabs-list {
+  margin: -1px -15em -1px 0;
+  /* This is required to win specificity over [dir="rtl"] .region-content ul */
   padding: 0;
 }