Bug 1577752 - Use padding-block and padding-inline for the urlbar's one-off search button adjustments. r=harry

Differential Revision: https://phabricator.services.mozilla.com/D44141

--HG--
extra : moz-landing-system : lando

browser/themes/shared/urlbar-autocomplete.inc.css

@@ -276,8 +276,7 @@
 /* Search one-offs. */
 #urlbar .search-one-offs {
   -moz-box-orient: horizontal;
-  padding-top: 16px;
-  padding-bottom: 16px;
+  padding-block: 16px;
 }
 
 .urlbarView.megabar .search-one-offs {
@@ -290,8 +289,7 @@
 }
 
 #urlbar .search-panel-one-offs {
-  padding-left: 12px;
-  padding-right: 12px;
+  padding-inline: 12px;
 }
 
 #urlbar .search-panel-header {