diff --git a/src/_sass/gtk/_common-3.20.scss b/src/_sass/gtk/_common-3.20.scss
index 34feec4..8866b68 100644
--- a/src/_sass/gtk/_common-3.20.scss
+++ b/src/_sass/gtk/_common-3.20.scss
@@ -3620,11 +3620,7 @@ decoration {
 
 // Window Close button
 button.titlebutton {
-  // @extend %button-flat-simple;
-
   @extend %circular-button;
-
-  // .selection-mode & { }
 }
 
 .monospace { font-family: monospace; }
diff --git a/src/_sass/gtk/_common-4.0.scss b/src/_sass/gtk/_common-4.0.scss
index b1a9c9f..71cc796 100644
--- a/src/_sass/gtk/_common-4.0.scss
+++ b/src/_sass/gtk/_common-4.0.scss
@@ -2034,6 +2034,7 @@ scrollbar {
   > range > trough {
     box-shadow: none;
     outline: none;
+    background: none;
 
     > slider {
       transition: background-color $duration $ease-out;
diff --git a/src/gtk/4.0/gtk-Compact.css b/src/gtk/4.0/gtk-Compact.css
index 1f738b9..9175e8a 100644
--- a/src/gtk/4.0/gtk-Compact.css
+++ b/src/gtk/4.0/gtk-Compact.css
@@ -2325,6 +2325,7 @@ scrollbar.right {
 scrollbar > range > trough {
   box-shadow: none;
   outline: none;
+  background: none;
 }
 
 scrollbar > range > trough > slider {
diff --git a/src/gtk/4.0/gtk-Dark-Compact.css b/src/gtk/4.0/gtk-Dark-Compact.css
index 300f91b..7487766 100644
--- a/src/gtk/4.0/gtk-Dark-Compact.css
+++ b/src/gtk/4.0/gtk-Dark-Compact.css
@@ -2325,6 +2325,7 @@ scrollbar.right {
 scrollbar > range > trough {
   box-shadow: none;
   outline: none;
+  background: none;
 }
 
 scrollbar > range > trough > slider {
diff --git a/src/gtk/4.0/gtk-Dark.css b/src/gtk/4.0/gtk-Dark.css
index d15fae4..77a0898 100644
--- a/src/gtk/4.0/gtk-Dark.css
+++ b/src/gtk/4.0/gtk-Dark.css
@@ -2325,6 +2325,7 @@ scrollbar.right {
 scrollbar > range > trough {
   box-shadow: none;
   outline: none;
+  background: none;
 }
 
 scrollbar > range > trough > slider {
diff --git a/src/gtk/4.0/gtk-Light-Compact.css b/src/gtk/4.0/gtk-Light-Compact.css
index a50a756..89eea5c 100644
--- a/src/gtk/4.0/gtk-Light-Compact.css
+++ b/src/gtk/4.0/gtk-Light-Compact.css
@@ -2325,6 +2325,7 @@ scrollbar.right {
 scrollbar > range > trough {
   box-shadow: none;
   outline: none;
+  background: none;
 }
 
 scrollbar > range > trough > slider {
diff --git a/src/gtk/4.0/gtk-Light.css b/src/gtk/4.0/gtk-Light.css
index 6420666..7e74d31 100644
--- a/src/gtk/4.0/gtk-Light.css
+++ b/src/gtk/4.0/gtk-Light.css
@@ -2325,6 +2325,7 @@ scrollbar.right {
 scrollbar > range > trough {
   box-shadow: none;
   outline: none;
+  background: none;
 }
 
 scrollbar > range > trough > slider {
diff --git a/src/gtk/4.0/gtk.css b/src/gtk/4.0/gtk.css
index f513176..ab74972 100644
--- a/src/gtk/4.0/gtk.css
+++ b/src/gtk/4.0/gtk.css
@@ -2325,6 +2325,7 @@ scrollbar.right {
 scrollbar > range > trough {
   box-shadow: none;
   outline: none;
+  background: none;
 }
 
 scrollbar > range > trough > slider {