<Style xmlns="https://github.com/avaloniaui" Selector="ListBox">
    <Setter Property="BorderBrush" Value="{StyleResource ThemeBorderMidBrush}"/>
    <Setter Property="BorderThickness" Value="{StyleResource ThemeBorderThickness}"/>
    <Setter Property="Padding" Value="4"/>
    <Setter Property="Template">
        <ControlTemplate>
            <Border Background="{TemplateBinding Background}"
                    BorderBrush="{TemplateBinding BorderBrush}"
                    BorderThickness="{TemplateBinding BorderThickness}">
                <ScrollViewer Name="PART_ScrollViewer" CanScrollHorizontally="False">
                    <ItemsPresenter Name="PART_ItemsPresenter"
                                    Items="{TemplateBinding Items}"
                                    ItemsPanel="{TemplateBinding ItemsPanel}"
                                    ItemTemplate="{TemplateBinding ItemTemplate}"
                                    Margin="{TemplateBinding Padding}"
                                    MemberSelector="{TemplateBinding MemberSelector}"
                                    VirtualizationMode="{TemplateBinding VirtualizationMode}"/>
                </ScrollViewer>
            </Border>
        </ControlTemplate>
    </Setter>
</Style>