Bug 877666 - Defect - Validation sometimes enables for the nav bar. r=fryn

browser/metro/theme/browser.css

@@ -308,7 +308,7 @@ documenttab[selected] .documenttab-selection {
   padding: 0 !important;
 }
 
-#urlbar-edit :invalid {
+#urlbar-edit > hbox > .textbox-input-box > .textbox-input:invalid {
   /* Hide error glow around the address bar that shows by default
    * when URLs are made invalid by trmming. */
   box-shadow: none !important;