diff --git a/src/browser/themes/shared/zen-sidebar.css b/src/browser/themes/shared/zen-sidebar.css
index a9c925c79..1e2a42f40 100644
--- a/src/browser/themes/shared/zen-sidebar.css
+++ b/src/browser/themes/shared/zen-sidebar.css
@@ -104,18 +104,18 @@
 
 /* Ugly code */
 
-#sidebar-box[hidden="true"] .zen-sidebar-action-button:nth-child(1) { animation-delay: 0.1s; }
-#sidebar-box[hidden="true"] .zen-sidebar-action-button:nth-child(2) { animation-delay: 0.2s; }
-#sidebar-box[hidden="true"] .zen-sidebar-action-button:nth-child(3) { animation-delay: 0.3s; }
-#sidebar-box[hidden="true"] .zen-sidebar-action-button:nth-child(4) { animation-delay: 0.4s; }
-#sidebar-box[hidden="true"] .zen-sidebar-action-button:nth-child(5) { animation-delay: 0.5s; }
-#sidebar-box[hidden="true"] .zen-sidebar-action-button:nth-child(6) { animation-delay: 0.6s; }
-#sidebar-box[hidden="true"] .zen-sidebar-action-button:nth-child(7) { animation-delay: 0.7s; }
-#sidebar-box[hidden="true"] .zen-sidebar-action-button:nth-child(8) { animation-delay: 0.8s; }
-#sidebar-box[hidden="true"] .zen-sidebar-action-button:nth-child(9) { animation-delay: 0.9s; }
-#sidebar-box[hidden="true"] .zen-sidebar-action-button:nth-child(10) { animation-delay: 1s; }
+#TabsToolbar .zen-sidebar-action-button:nth-child(1) { animation-delay: 0.1s; }
+#TabsToolbar .zen-sidebar-action-button:nth-child(2) { animation-delay: 0.2s; }
+#TabsToolbar .zen-sidebar-action-button:nth-child(3) { animation-delay: 0.3s; }
+#TabsToolbar .zen-sidebar-action-button:nth-child(4) { animation-delay: 0.4s; }
+#TabsToolbar .zen-sidebar-action-button:nth-child(5) { animation-delay: 0.5s; }
+#TabsToolbar .zen-sidebar-action-button:nth-child(6) { animation-delay: 0.6s; }
+#TabsToolbar .zen-sidebar-action-button:nth-child(7) { animation-delay: 0.7s; }
+#TabsToolbar .zen-sidebar-action-button:nth-child(8) { animation-delay: 0.8s; }
+#TabsToolbar .zen-sidebar-action-button:nth-child(9) { animation-delay: 0.9s; }
+#TabsToolbar .zen-sidebar-action-button:nth-child(10) { animation-delay: 1s; }
 
-#sidebar-box[hidden="true"] .zen-side-bar-profiles-button-panel-correction {
+#TabsToolbar .zen-side-bar-profiles-button-panel-correction {
   position: absolute;
   bottom: -2px;
   right: -2px;