diff --git a/css/leptonChrome.css b/css/leptonChrome.css
index dd84334..d741dfd 100644
--- a/css/leptonChrome.css
+++ b/css/leptonChrome.css
@@ -2182,6 +2182,8 @@
 @supports -moz-bool-pref("userChrome.theme.transparent.frame") {
   @media (-moz-os-version: windows-win10),
     (-moz-platform: windows-win10),
+    (-moz-os-version: windows-win8),
+    (-moz-platform: windows-win8),
     (-moz-os-version: windows-win7),
     (-moz-platform: windows-win7),
     (-moz-gtk-csd-available) {
@@ -2208,7 +2210,11 @@
       -moz-default-appearance: -moz-win-exclude-glass !important;
     }
   }
-  @media (-moz-os-version: windows-win7), (-moz-platform: windows-win7), (-moz-gtk-csd-available) {
+  @media (-moz-os-version: windows-win8),
+    (-moz-platform: windows-win8),
+    (-moz-os-version: windows-win7),
+    (-moz-platform: windows-win7),
+    (-moz-gtk-csd-available) {
     :root:not(:-moz-lwtheme) {
       --lwt-accent-color: Window !important;
       --lwt-text-color: WindowText !important;
@@ -2229,11 +2235,23 @@
         );
       }
     }
-    #main-menubar:not(:-moz-window-inactive),
-    .titlebar-buttonbox-container:not(:-moz-window-inactive) {
-      background-color: var(--uc-frame-element-background) !important;
+    #main-menubar {
       border-radius: 4px;
     }
+    #main-menubar:not(:-moz-window-inactive) {
+      background-color: var(--uc-frame-element-background) !important;
+    }
+    @media (-moz-os-version: windows-win8), (-moz-platform: windows-win8) {
+      #main-menubar:-moz-window-inactive {
+        background-color: var(--uc-frame-element-background) !important;
+      }
+    }
+    @media (-moz-gtk-csd-available) {
+      .titlebar-buttonbox-container:not(:-moz-window-inactive) {
+        background-color: var(--uc-frame-element-background) !important;
+        border-radius: 4px;
+      }
+    }
     #TabsToolbar {
       --toolbarseparator-color: transparent;
     }
@@ -2273,7 +2291,10 @@
       transform: translateY(-7px) !important;
     }
   }
-  @media (-moz-os-version: windows-win7), (-moz-platform: windows-win7) {
+  @media (-moz-os-version: windows-win8),
+    (-moz-platform: windows-win8),
+    (-moz-os-version: windows-win7),
+    (-moz-platform: windows-win7) {
     :root:not([lwtheme-image]):-moz-lwtheme {
       background-color: transparent !important;
       background-image: none !important;
diff --git a/src/theme/_transparent.scss b/src/theme/_transparent.scss
index e37aeb7..e36563f 100644
--- a/src/theme/_transparent.scss
+++ b/src/theme/_transparent.scss
@@ -1,14 +1,14 @@
-@include OS($win10, $win7, $linux) {
+@include OS($win10, $win8, $win7, $linux) {
   @import "transparent/general";
 }
-@include OS($win7, $linux) {
+@include OS($win8, $win7, $linux) {
   @import "transparent/general_element_background";
 }
 @include OS($win10) {
   @import "transparent/win11";
 }
-@include OS($win7) {
-  @import "transparent/win7";
+@include OS($win8, $win7) {
+  @import "transparent/win7_8";
 }
 @include OS($mac) {
   @import "transparent/mac";
diff --git a/src/theme/transparent/_general_element_background.scss b/src/theme/transparent/_general_element_background.scss
index 7a85fa9..fc375cb 100644
--- a/src/theme/transparent/_general_element_background.scss
+++ b/src/theme/transparent/_general_element_background.scss
@@ -26,10 +26,23 @@
   }
 }
 
-#main-menubar:not(:-moz-window-inactive),
-.titlebar-buttonbox-container:not(:-moz-window-inactive) {
-  background-color: var(--uc-frame-element-background) !important;
+#main-menubar {
   border-radius: 4px;
+
+  &:not(:-moz-window-inactive) {
+    background-color: var(--uc-frame-element-background) !important;
+  }
+  @include OS($win8) {
+    &:-moz-window-inactive {
+      background-color: var(--uc-frame-element-background) !important;
+    }
+  }
+}
+@include OS($linux) {
+  .titlebar-buttonbox-container:not(:-moz-window-inactive) {
+    background-color: var(--uc-frame-element-background) !important;
+    border-radius: 4px;
+  }
 }
 
 #TabsToolbar {
diff --git a/src/theme/transparent/_win7.scss b/src/theme/transparent/_win7_8.scss
similarity index 100%
rename from src/theme/transparent/_win7.scss
rename to src/theme/transparent/_win7_8.scss