<Styles xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Design.PreviewWith>
        <Border Padding="20">
            <!--  Add Controls for Previewer Here  -->
        </Border>
    </Design.PreviewWith>

    <Style Selector="TextBlock.Margin8">
        <Setter Property="Margin" Value="10" />
    </Style>
    <Style Selector="StackPanel.Margin8">
        <Setter Property="Margin" Value="10" />
    </Style>
    <Style Selector="DockPanel.Margin8">
        <Setter Property="Margin" Value="10" />
    </Style>
    <Style Selector="WrapPanel.Margin8">
        <Setter Property="Margin" Value="10" />
    </Style>
    <Style Selector="Grid.Margin8">
        <Setter Property="Margin" Value="10" />
    </Style>
</Styles>