Bug 1270495 - Only apply the margin-top to direct children of the widget-overflow-list, instead of also to children of combined toolbar items. r=gijs

MozReview-Commit-ID: 3QZuWOrGOQp

browser/themes/shared/customizableui/panelUIOverlay.inc.css

@@ -1067,8 +1067,8 @@ panelview .toolbarbutton-1,
 }
 
 panelview .toolbarbutton-1,
-.widget-overflow-list .toolbarbutton-1:not(:first-child),
-.widget-overflow-list .toolbaritem-combined-buttons:not(:first-child) {
+.widget-overflow-list > .toolbarbutton-1:not(:first-child),
+.widget-overflow-list > toolbaritem:not(:first-child) {
   margin-top: 6px;
 }