Fix tab bug on storefront

Author: dazvolt

app/design/frontend/Magento/blank/Magento_ProductVideo/web/css/source/_module.less

@@ -81,3 +81,15 @@ and (orientation : landscape) {
     bottom: 89%;
     top: auto;
 }
+
+.fotorama__stage__shaft:focus .fotorama__stage__frame.fotorama__active:after {
+    bottom: 0;
+    content: '';
+    height: 100px;
+    left: 0;
+    margin: auto;
+    position: absolute;
+    right: 0;
+    top: 12px;
+    width: 100px;
+}