From 295d4e45cf6b24bb26e4075646a10dd5969b98fa Mon Sep 17 00:00:00 2001
From: webchick <webchick@24967.no-reply.drupal.org>
Date: Wed, 5 Sep 2012 23:37:54 -0700
Subject: [PATCH] Issue #1057912 by bfroehle, mgifford, bowersox, tarekdj,
 geerlingguy, irunflower, hgurol: Fixed Weird Border on Vertical Tabs with
 Google Chrome and Safari caused by .element-invisible.

---
 core/modules/system/system.base.css | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/core/modules/system/system.base.css b/core/modules/system/system.base.css
index f8a772632a0b..610d94d28eb1 100644
--- a/core/modules/system/system.base.css
+++ b/core/modules/system/system.base.css
@@ -236,6 +236,8 @@ tr .ajax-progress-throbber .throbber {
   position: absolute !important;
   clip: rect(1px, 1px, 1px, 1px);
   left: 0;
+  overflow: hidden;
+  height: 1px;
 }
 
 /**
@@ -246,6 +248,8 @@ tr .ajax-progress-throbber .throbber {
 .element-invisible.element-focusable:focus {
   position: static !important;
   clip: auto;
+  overflow: visible;
+  height: auto;
 }
 
 /**