Issue #2459607 by idebr: Seven vertical tabs have underlined links in hover/focus state

core/themes/seven/css/components/vertical-tabs.css

@@ -57,6 +57,7 @@
 .vertical-tabs__menu-item a:focus {
   background: #fcfcfa;
   text-shadow: none;
+  text-decoration: none;
 }
 .vertical-tabs__menu-item.is-selected a {
   border-bottom-color: #b3b2ad;
@@ -99,9 +100,6 @@
   color: #666;
   font-size: 0.846em;
 }
-.vertical-tabs__menu-item.is-selected a:focus .vertical-tabs__menu-item-title {
-  text-decoration: underline;
-}
 .vertical-tabs__pane > summary {
   display: none;
 }