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="Template">
            <Setter.Value>
                <ControlTemplate TargetType="controls:NotificationFlyoutPresenter">
                    <ContentPresenter
                        x:Name="ContentPresenter"
                        Content="{TemplateBinding Content}"
                        ContentTemplate="{TemplateBinding ContentTemplate}" />
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>