diff --git a/GTK-3-settings-on-Wayland.md b/GTK-3-settings-on-Wayland.md
index 630eb67..5d28844 100644
--- a/GTK-3-settings-on-Wayland.md
+++ b/GTK-3-settings-on-Wayland.md
@@ -57,6 +57,30 @@ Importing the gtk, icon, and cursor themes:
 exec_always import-gsettings
 ```
 
+
+### Removing the rounded corners and dropshadow of themes like Adwaita
+
+If you use 1 pixel border the theme's shadow can leak underneath, also sway's border can only be without border radius so to remove any of these issues make a file at `${XDG_CONFIG_HOME}/gtk-3.0/gtk.css` put following selectors there.
+
+```
+/** Some apps use titlebar class and some window */
+.titlebar,
+window {
+	border-radius: 0;
+	box-shadow: none;
+}
+
+/** also remove shaddows */
+decoration {
+	box-shadow: none;
+}
+
+decoration:backdrop {
+	box-shadow: none;
+}
+```
+
+
 ## XSettings
 
 Some GTK applications running via XWayland, and some Java applications, need an XSettings daemon running in order to pick up the themes and font settings.