diff --git a/core/themes/seven/css/components/vertical-tabs.css b/core/themes/seven/css/components/vertical-tabs.css
index 325a3af..836cecd 100644
--- a/core/themes/seven/css/components/vertical-tabs.css
+++ b/core/themes/seven/css/components/vertical-tabs.css
@@ -33,6 +33,10 @@
   width: 100%;
   border-right: 1px solid #fcfcfa; /* LTR */
   box-shadow: 0 5px 5px -5px hsla(0, 0%, 0%, 0.3);
+  border-bottom: 1px solid #b3b2ad;
+}
+.vertical-tab-button.last {
+  border-bottom: none;
 }
 [dir="rtl"] .vertical-tab-button.selected {
   border-left: 1px solid #fcfcfa;
@@ -42,6 +46,9 @@
 .vertical-tab-button:active {
   z-index: 2;
 }
+.vertical-tab-button.selected:focus {
+  outline: none;
+}
 .vertical-tab-button a {
   display: block;
   padding: 10px 15px 15px;
@@ -61,8 +68,20 @@
   text-decoration: none;
 }
 .vertical-tab-button.selected a {
-  border-bottom-color: #b3b2ad;
   color: #004f80;
+  border-left: 4px solid #0074bd; /* LTR */
+  padding-left: 11px; /* LTR */
+  border-bottom: none;
+  outline: none;
+  text-decoration: none;
+}
+[dir=rtl] .vertical-tab-button.selected a {
+  border-left: 0;
+  border-right: 4px solid #0074bd;
+  padding-right: 15px;
+}
+li.vertical-tab-button.selected a:focus strong {
+  text-decoration: none;
 }
 .vertical-tab-button.selected a:hover,
 .vertical-tab-button.selected a:focus {