diff --git a/ShowMeTheXaml.Avalonia.Demo/Views/MainWindow.xaml b/ShowMeTheXaml.Avalonia.Demo/Views/MainWindow.xaml
index d5dd9be..e260402 100644
--- a/ShowMeTheXaml.Avalonia.Demo/Views/MainWindow.xaml
+++ b/ShowMeTheXaml.Avalonia.Demo/Views/MainWindow.xaml
@@ -34,10 +34,10 @@
       </StackPanel>
     </Grid>
 
-    <showMeTheXaml:XamlDisplay UniqueId="123">
+    <showMeTheXaml:XamlDisplay UniqueId="123" HorizontalAlignment="Center">
       <TextBlock Text="{Binding Greeting}" HorizontalAlignment="Center" VerticalAlignment="Center" />
     </showMeTheXaml:XamlDisplay>
-    <showMeTheXaml:XamlDisplay UniqueId="1">
+    <showMeTheXaml:XamlDisplay UniqueId="1" HorizontalAlignment="Center">
       <Canvas Background="Yellow" Width="300" Height="150">
         <Rectangle Fill="Blue" Width="63" Height="41" Canvas.Left="20" Canvas.Top="11">
           <Rectangle.OpacityMask>