<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
                    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
                    mc:Ignorable="d">

    <Style x:Key="RibbonSeparatorStyle"
           TargetType="{x:Type Separator}">
        <Setter Property="Margin"
                Value="4,0,4,0" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="Separator">
                    <Rectangle Width="1"
                               VerticalAlignment="Stretch"
                               Stroke="{DynamicResource Fluent.Ribbon.Brushes.GroupSeparator.Background}"
                               StrokeThickness="1" />
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>