NotificationFlyout/NotificationFlyout.Uwp.UI.Controls/NotificationFlyoutPresenter/NotificationFlyoutPresenter.xaml

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:controls="using:NotificationFlyout.Uwp.UI.Controls">
    <Style TargetType="controls:NotificationFlyoutPresenter">
        <Setter Property="Background" Value="{StaticResource SystemControlTransientBackgroundBrush}" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="controls:NotificationFlyoutPresenter">
                    <Grid x:Name="Root">
                        <FlyoutBase.AttachedFlyout>
                            <Flyout AreOpenCloseAnimationsEnabled="False" ShouldConstrainToRootBounds="False">
                                <Flyout.FlyoutPresenterStyle>
                                    <Style TargetType="FlyoutPresenter">
                                        <Setter Property="BorderThickness" Value="0" />
                                        <Setter Property="Background" Value="Transparent" />
                                        <Setter Property="IsDefaultShadowEnabled" Value="False" />
                                        <Setter Property="Padding" Value="0" />
                                        <Setter Property="Margin" Value="0" />
                                    </Style>
                                </Flyout.FlyoutPresenterStyle>
                                <Border
                                    Padding="{TemplateBinding Padding}"
                                    Background="{TemplateBinding Background}"
                                    BackgroundSizing="OuterBorderEdge"
                                    BorderBrush="{TemplateBinding BorderBrush}"
                                    BorderThickness="{TemplateBinding BorderThickness}"
                                    CornerRadius="{TemplateBinding CornerRadius}">
                                    <Border.Transitions>
                                        <TransitionCollection>
                                            <EntranceThemeTransition FromHorizontalOffset="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=TemplateSettings.FromHorizontalOffset, Mode=TwoWay}" FromVerticalOffset="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=TemplateSettings.FromVerticalOffset, Mode=TwoWay}" />
                                        </TransitionCollection>
                                    </Border.Transitions>
                                    <ScrollViewer
                                        x:Name="ScrollViewer"
                                        AutomationProperties.AccessibilityView="Raw"
                                        HorizontalScrollBarVisibility="{TemplateBinding ScrollViewer.HorizontalScrollBarVisibility}"
                                        HorizontalScrollMode="{TemplateBinding ScrollViewer.HorizontalScrollMode}"
                                        VerticalScrollBarVisibility="{TemplateBinding ScrollViewer.VerticalScrollBarVisibility}"
                                        VerticalScrollMode="{TemplateBinding ScrollViewer.VerticalScrollMode}"
                                        ZoomMode="{TemplateBinding ScrollViewer.ZoomMode}">
                                        <ContentPresenter
                                            Margin="{TemplateBinding Padding}"
                                            HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                            VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                                            Content="{TemplateBinding Content}"
                                            ContentTemplate="{TemplateBinding ContentTemplate}"
                                            ContentTransitions="{TemplateBinding ContentTransitions}" />
                                    </ScrollViewer>
                                </Border>
                            </Flyout>
                        </FlyoutBase.AttachedFlyout>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>