PP_Minin/PP_Ven_MosS/Pages/NavigatePage.xaml

<Page x:Class="PP_Ven_MosS.Pages.NavigatePage"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
      xmlns:local="clr-namespace:PP_Ven_MosS.Pages"
      mc:Ignorable="d" 
      d:DesignHeight="450" d:DesignWidth="800"
      Title="NavigatePage">

    <Grid>
        <StackPanel VerticalAlignment="Center" Orientation="Vertical" HorizontalAlignment="Center">
        <StackPanel Orientation="Horizontal">
            <Button Height="30" Content="Служебные записки" FontSize="20" Style="{StaticResource BtnSt}" Margin="50"></Button>
                <Button Height="30" Content="Мероприятия" FontSize="20" Style="{StaticResource BtnSt}" Margin="50"></Button>
        </StackPanel>
            <Button Height="30" Content="Выход" FontSize="20" Style="{StaticResource BtnSt}"></Button>
    </StackPanel>
    </Grid>
</Page>