diff --git a/gtk-3.0/gtk.css b/gtk-3.0/gtk.css
new file mode 100644
index 0000000..dee08df
--- /dev/null
+++ b/gtk-3.0/gtk.css
@@ -0,0 +1,11 @@
+@import 'colors.css';
+
+window-frame, .window-frame:backdrop { box-shadow: 0 0 0 black; border-style: none; margin: 0px; border-radius: 0; box-shadow: none; }
+
+.popover, .popover.background { box-shadow: none; }
+
+decoration { box-shadow: none; margin: 0px; }
+
+.csd.popup { box-shadow: none; }
+
+tooltip { margin: 0px; border-radius: 0px; box-shadow: none; }