<Krempel_WP7_Core_Controls:HtmlTextBlock x:Name="TestHTMLTextBox" Html="lorem ipsum" Margin="0,0,80,0" VerticalAlignment="Top" HorizontalAlignment="Left" H1Foreground="{StaticResource PhoneAccentBrush}" H1FontFamily="Segoe WP SemiLight" H2FontFamily="Times New Roman" H1FontWeight="Light" H1FontSize="41" H2FontSize="5"/>

<Button Content="Button" Margin="150,166,180,0" VerticalAlignment="Top" d:LayoutOverrides="Width" Click="Button_Click"/>