diff --git a/userChrome.css b/userChrome.css
index 2ce5c58..e18874c 100644
--- a/userChrome.css
+++ b/userChrome.css
@@ -185,13 +185,26 @@
   }
 }
 
-/*= Linux - Global Menubar Active Color ======================================*/
 @media (-moz-gtk-csd-available) {
+  /*= Linux - Global Menubar Active Color ====================================*/
   #main-menubar > menu[open="true"],
   #main-menubar > menu[_moz-menuactive="true"] {
     color: inherit !important; /* Original: -moz-menubarhovertext */
     background-color: color-mix(in srgb, currentColor 20%, transparent) !important; /* Original: -moz-menuhover */
   }
+
+  /*= Linux - Titlebar button at lwtheme =====================================*/
+  .titlebar-button:-moz-lwtheme {
+    appearance: auto !important;
+  }
+  .titlebar-min:-moz-lwtheme, .titlebar-max:-moz-lwtheme, .titlebar-restore:-moz-lwtheme, .titlebar-close:-moz-lwtheme {
+    list-style-image: none !important;
+  }
+  .titlebar-button:-moz-lwtheme:hover,
+  .titlebar-button:-moz-lwtheme:hover:active {
+    background-color: unset !important;
+    color: unset !important;
+  }
 }
 
 /*= Linux - Light System Default Theme's Selected Tab ========================*/