diff --git a/chrome/multi-row_tabs.css b/chrome/multi-row_tabs.css
index dee964e..759b5e5 100644
--- a/chrome/multi-row_tabs.css
+++ b/chrome/multi-row_tabs.css
@@ -91,6 +91,9 @@
 
 .tabbrowser-tab > stack{ width: 100%; height: 100% }
 
+#scrollbutton-up,
+#scrollbutton-down,
+#scrollbutton-up~spacer,
 #tabbrowser-tabs .scrollbutton-up,
 #tabbrowser-tabs .scrollbutton-down,
 #alltabs-button,
diff --git a/chrome/multi-row_tabs_below_content_Fx66+.css b/chrome/multi-row_tabs_below_content_Fx66+.css
index 3c30a21..684851d 100644
--- a/chrome/multi-row_tabs_below_content_Fx66+.css
+++ b/chrome/multi-row_tabs_below_content_Fx66+.css
@@ -147,6 +147,9 @@
   margin-inline-start: 0px !important;
 }
 
+#scrollbutton-up,
+#scrollbutton-down,
+#scrollbutton-up~spacer,
 #tabbrowser-tabs .scrollbutton-up,
 #tabbrowser-tabs .scrollbutton-down,
 #alltabs-button,