<Styles xmlns="https://github.com/avaloniaui"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Style Selector="HeaderedContentControl.GroupBox">
        <Setter Property="Margin" Value="2,2,0,0" />
        <Setter Property="BorderBrush" Value="{StaticResource DarkMediumBorderBrush}" />
        <Setter Property="BorderThickness" Value="1" />
        <Setter Property="Padding" Value="4" />

        <Setter Property="Template">
            <ControlTemplate>
                <Border Grid.Row="1"
                        BorderBrush="{TemplateBinding BorderBrush}"
                        BorderThickness="{TemplateBinding BorderThickness}"
                        CornerRadius="{TemplateBinding CornerRadius}">
                    <Grid RowDefinitions="Auto,*">
                        <Border Margin="{TemplateBinding Padding}"
                                Padding="0,0,0,2"
                                BorderBrush="{StaticResource DarkMediumBorderBrush}"
                                BorderThickness="0,0,0,1">
                            <TextBlock Margin="2,0,0,0"
                                       FontSize="13"
                                       FontWeight="500"
                                       Foreground="{StaticResource DarkForegroundBrush}"
                                       Text="{TemplateBinding Header}"
                                       UseLayoutRounding="False" />
                        </Border>

                        <ContentPresenter Grid.Row="1"
                                          Margin="4,0"
                                          Content="{TemplateBinding Content}" />
                    </Grid>
                </Border>
            </ControlTemplate>
        </Setter>
    </Style>
</Styles>