diff --git a/src/sass/gtk/_common-3.0.scss b/src/sass/gtk/_common-3.0.scss
index e2214113..a990ed53 100644
--- a/src/sass/gtk/_common-3.0.scss
+++ b/src/sass/gtk/_common-3.0.scss
@@ -28,7 +28,7 @@ $cakeisalie: "This stylesheet is generated, DO NOT EDIT";
   -gtk-secondary-caret-color: $selected_bg_color;
 }
 
-$side_style_shadow: linear-gradient(to left, rgba(black, if($variant == 'light', 0.02, 0.1)), transparent 6px);
+$side_style_shadow: linear-gradient(to left, rgba(black, if($variant == 'light', 0.02, 0.06)), transparent 6px);
 
 %side_style_left {
   background-image: $side_style_shadow;
@@ -4472,8 +4472,8 @@ popover.emoji-picker {
 
 // mimic tab style
 button.emoji-section {
-  margin: $container_padding / 2 1px;
-  padding: 1px $container_padding * 2;
+  margin: $container_padding 2px;
+  padding: 0 $container_padding * 2;
   border-radius: $bt_radius;
   border: none;
   outline-offset: -2px;
diff --git a/src/sass/gtk/_common-4.0.scss b/src/sass/gtk/_common-4.0.scss
index b4437c2e..ff4c73d3 100644
--- a/src/sass/gtk/_common-4.0.scss
+++ b/src/sass/gtk/_common-4.0.scss
@@ -4,9 +4,18 @@
 $cakeisalie: "This stylesheet is generated, DO NOT EDIT";
 /* #{$cakeisalie} */
 
+$side_style_shadow: linear-gradient(to left, rgba(black, if($variant == 'light', 0.02, 0.06)), transparent 6px);
+
+%side_style_left {
+  background-image: $side_style_shadow;
+  background-color: rgba($dark_sidebar_bg, 1);
+  box-shadow: none;
+  border: none;
+}
+
 %side_headerbar_left {
   &, &:backdrop {
-    background-image: none;
+    background-image: $side_style_shadow;
     background-color: rgba($dark_sidebar_bg, 1);
     border: none;
   }
@@ -16,6 +25,7 @@ $cakeisalie: "This stylesheet is generated, DO NOT EDIT";
   &, &:backdrop {
     background-image: none;
     background-color: rgba($base_color, 1);
+    border: none;
   }
 }
 
diff --git a/src/sass/gtk/apps/_gnome-40.0.scss b/src/sass/gtk/apps/_gnome-40.0.scss
index 1a3c2e7d..3044cae2 100644
--- a/src/sass/gtk/apps/_gnome-40.0.scss
+++ b/src/sass/gtk/apps/_gnome-40.0.scss
@@ -1155,6 +1155,38 @@ spinner.fade-in:checked {
   animation-delay: 0s, 0.5s, 0.5s;
 }
 
+//
+// Gnome Tweaks
+//
+
+window.background.csd {
+  > dialog-host > widget > widget > box > leaflet {
+    > headerbar.titlebar.tweak-titlebar-left {
+      @extend %side_headerbar_left;
+    }
+
+    > headerbar.titlebar.tweak-titlebar-right {
+      @extend %side_headerbar_right;
+    }
+
+    > separator {
+      @extend %side_separator;
+    }
+
+    > box > searchbar {
+      @extend %side_searchbar;
+    }
+
+    list.navigation-sidebar {
+      @extend %side_style_left;
+    }
+
+    stack.background {
+      background-color: $base_color;
+    }
+  }
+}
+
 //
 // Misc (other)
 //