--- a/browser/components/preferences/sitePermissions.css
+++ b/browser/components/preferences/sitePermissions.css
@@ -1,14 +1,14 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 .website-name {
-  padding: 5px;
+  -moz-box-align: center;
 }
 
 #permissionsBox {
   min-height: 18em;
 }
 
 #permissionsBox > richlistitem {
   min-height: 35px;