Issue #1057912 by bfroehle, mgifford, bowersox, tarekdj, geerlingguy, hgurol: Fixed Weird Border on Vertical Tabs with Google Chrome and Safari caused by .element-invisible.

modules/system/system.base.css

@@ -231,6 +231,8 @@ html.js .js-hide {
   position: absolute !important;
   clip: rect(1px 1px 1px 1px); /* IE6, IE7 */
   clip: rect(1px, 1px, 1px, 1px);
+  overflow: hidden;
+  height: 1px;
 }
 
 /**
@@ -241,6 +243,8 @@ html.js .js-hide {
 .element-invisible.element-focusable:focus {
   position: static !important;
   clip: auto;
+  overflow: visible;
+  height: auto;
 }
 
 /**