<ResourceDictionary
    xmlns="https://github.com/avaloniaui"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:CompileBindings="True">
    <ControlTheme x:Key="{x:Type ItemsControl}" TargetType="ItemsControl">
        <Setter Property="Template">
            <ControlTemplate>
                <Border
                    Padding="{TemplateBinding Padding}"
                    Background="{TemplateBinding Background}"
                    BorderBrush="{TemplateBinding BorderBrush}"
                    BorderThickness="{TemplateBinding BorderThickness}"
                    CornerRadius="{TemplateBinding CornerRadius}">
                    <ItemsPresenter Name="PART_ItemsPresenter" ItemsPanel="{TemplateBinding ItemsPanel}" />
                </Border>
            </ControlTemplate>
        </Setter>
    </ControlTheme>
</ResourceDictionary>