<xamlhost:XamlApplication
    x:Class="NotificationFlyout.XamlHost.App"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:xamlhost="using:Microsoft.Toolkit.Win32.UI.XamlHost">
    <xamlhost:XamlApplication.Resources>
        <XamlControlsResources xmlns="using:Microsoft.UI.Xaml.Controls" />
    </xamlhost:XamlApplication.Resources>
</xamlhost:XamlApplication>