diff -Nru serenity-1.1/debian/changelog serenity-1.1/debian/changelog
--- serenity-1.1/debian/changelog	2021-07-23 11:38:40.000000000 +0000
+++ serenity-1.1/debian/changelog	2021-07-23 11:38:40.000000000 +0000
@@ -1,5 +1,5 @@
-serenity (1.1-7) bionic; urgency=medium
+serenity (1.1-9) bionic; urgency=medium
 
-  *  Various-UI-fixes
+  *  Fix-gnome-boxes-headerbar-refusing-to-recognize-style-classes
 
  -- Neil Ross <aravisian@protonmail.com>  Fri, 23 Jul 2021 06:38:40 -0500
diff -Nru serenity-1.1/debian/control serenity-1.1/debian/control
--- serenity-1.1/debian/control	2021-07-23 11:38:40.000000000 +0000
+++ serenity-1.1/debian/control	2021-07-23 11:38:40.000000000 +0000
@@ -3,7 +3,7 @@
 Priority: optional
 Maintainer: Neil R. Ross <aravisian@protonmail.com>
 Build-Depends: debhelper-compat (= 9)
-Standards-Version: 1.1-7
+Standards-Version: 1.1-9
 Homepage: https://github.com/Aravisian
 
 Package: serenity
diff -Nru serenity-1.1/serenity/gtk-3.0/gtk.css serenity-1.1/serenity/gtk-3.0/gtk.css
--- serenity-1.1/serenity/gtk-3.0/gtk.css	2021-07-23 11:38:40.000000000 +0000
+++ serenity-1.1/serenity/gtk-3.0/gtk.css	2021-07-23 11:38:40.000000000 +0000
@@ -2609,16 +2609,14 @@
      border: 1px solid transparent;
 }
  headerbar separator.titlebutton, .titlebar:not(headerbar) separator.titlebutton {
-     min-width: 1px;
+     min-width: 0px;
      background-image: linear-gradient(to right, transparent, transparent);
      background-color: transparent;
-     background-repeat: no-repeat;
-     background-size: 100% 100%;
-     border: 1px solid transparent;
+     border: 0px solid transparent;
 }
  headerbar .right separator.titlebutton, .titlebar:not(headerbar) .right separator.titlebutton {
-     margin-left: 0px;
-     margin-right: 0px;
+     margin-left: 10px;
+     margin-right: 10px;
 }
  headerbar .left separator.titlebutton, .titlebar:not(headerbar) .left separator.titlebutton {
      margin-right: 0px;