diff --git a/core/themes/seven/css/components/vertical-tabs.css b/core/themes/seven/css/components/vertical-tabs.css
index 325a3af..8c15abd 100644
--- a/core/themes/seven/css/components/vertical-tabs.css
+++ b/core/themes/seven/css/components/vertical-tabs.css
@@ -63,6 +63,19 @@
 .vertical-tab-button.selected a {
   border-bottom-color: #b3b2ad;
   color: #004f80;
+  border-left: 4px solid #0074bd; /* LTR */
+  outline: none;
+  padding-left: 11px;
+}
+[dir=rtl] .vertical-tab-button.selected a {
+  border-left: 0;
+  border-right: 4px solid #0074bd;
+  outline: none;
+  text-decoration: none;
+  padding-right: 11px;
+}
+li.vertical-tab-button.selected a:focus strong {
+  text-decoration: none;
 }
 .vertical-tab-button.selected a:hover,
 .vertical-tab-button.selected a:focus {