diff --git a/src/Semi.Avalonia/Controls/Window.axaml b/src/Semi.Avalonia/Controls/Window.axaml
index 5ab264d..b84869d 100644
--- a/src/Semi.Avalonia/Controls/Window.axaml
+++ b/src/Semi.Avalonia/Controls/Window.axaml
@@ -29,5 +29,19 @@
                 </Panel>
             </ControlTemplate>
         </Setter>
+        <Style Selector="^.Borderless">
+            <Setter Property="ExtendClientAreaTitleBarHeightHint" Value="40"/>
+            <Setter Property="ExtendClientAreaToDecorationsHint" Value="True"/>
+            <Setter Property="SystemDecorations">
+                <OnPlatform>
+                    <On Options="Default, Windows, macOS">
+                        <SystemDecorations>Full</SystemDecorations>
+                    </On>
+                    <On Options="Linux">
+                        <SystemDecorations>None</SystemDecorations>
+                    </On>
+                </OnPlatform>
+            </Setter>
+        </Style>
     </ControlTheme>
 </ResourceDictionary>