diff --git a/src/Semi.Avalonia.Demo/Pages/FlyoutDemo.axaml b/src/Semi.Avalonia.Demo/Pages/FlyoutDemo.axaml
index 8c0e35e..52ce9ff 100644
--- a/src/Semi.Avalonia.Demo/Pages/FlyoutDemo.axaml
+++ b/src/Semi.Avalonia.Demo/Pages/FlyoutDemo.axaml
@@ -7,6 +7,11 @@
     d:DesignHeight="450"
     d:DesignWidth="800"
     mc:Ignorable="d">
+    <UserControl.Styles>
+        <Style Selector="Button">
+            <Setter Property="Margin" Value="8" />
+        </Style>
+    </UserControl.Styles>
     <Grid
         HorizontalAlignment="Center"
         VerticalAlignment="Center"