fixed issue with margin

samples/NotificationFlyoutSample/SampleFlyout.xaml

@@ -2,16 +2,15 @@
     x:Class="NotificationFlyoutSample.SampleFlyout"
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:controls="using:TheXamlGuy.NotificationFlyout.Uwp.UI.Controls"
-    CornerRadius="6">
+    xmlns:controls="using:TheXamlGuy.NotificationFlyout.Uwp.UI.Controls">
     <controls:NotificationFlyout.ContextFlyout>
         <MenuFlyout>
-            <MenuFlyoutItem Text="Close" Click="OnCloseMenuFlyoutItemClick" />
+            <MenuFlyoutItem Click="OnCloseMenuFlyoutItemClick" Text="Close" />
         </MenuFlyout>
     </controls:NotificationFlyout.ContextFlyout>
-    <Grid Width="500" Height="500">
+    <Grid Width="500" Height="400">
         <Button
-            HorizontalAlignment="Right"
+            HorizontalAlignment="Center"
             VerticalAlignment="Center"
             Content="Hello World!" />
     </Grid>

src/TheXamlGuy.NotificationFlyout.Uwp.UI.Controls/NotificationFlyout/NotificationFlyout.xaml

@@ -36,7 +36,7 @@
             <Setter.Value>
                 <ControlTemplate TargetType="controls:NotificationFlyout">
                     <Border x:Name="Container">
-                        <Grid x:Name="LayoutRoot">
+                        <Grid x:Name="LayoutRoot" Margin="{TemplateBinding Margin}">
                             <Border
                                 x:Name="BackgroundElement"
                                 Padding="{TemplateBinding Padding}"

src/TheXamlGuy.NotificationFlyout.Wpf.UI.Controls/NotificationFlyout/NotificationFlyoutApplication.cs

@@ -107,6 +107,7 @@ namespace TheXamlGuy.NotificationFlyout.Wpf.UI.Controls
 
             UpdateIcons();
         }
+
         private void PrepareFlyoutHost()
         {
             _notificationFlyoutXamlHost = new TransparentXamlHost<ContentControl>();
@@ -126,6 +127,7 @@ namespace TheXamlGuy.NotificationFlyout.Wpf.UI.Controls
             _notificationFlyoutXamlHost.Activate();
             Flyout.Show();
         }
+
         private void UpdateFlyoutPlacement()
         {
             var taskbarState = _taskbarHelper.GetCurrentState();