Shrlalgo.RvKits/WPFluent/Controls/ContextMenu/ContextMenu.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

    <Style TargetType="{x:Type ContextMenu}" x:Key="UiContextMenu">
        <Setter Property="TextElement.Foreground" Value="{DynamicResource TextFillColorPrimaryBrush}" />
        <Setter Property="Foreground" Value="{DynamicResource TextFillColorPrimaryBrush}" />
        <Setter Property="Background" Value="{DynamicResource AcrylicBackgroundFillColorDefaultBrush}" />
        <Setter Property="BorderBrush" Value="{DynamicResource SurfaceStrokeColorFlyoutBrush}" />
        <Setter Property="MinWidth" Value="140" />
        <Setter Property="Padding" Value="0" />
        <Setter Property="Margin" Value="0" />
        <Setter Property="HasDropShadow" Value="False" />
        <Setter Property="Grid.IsSharedSizeScope" Value="True" />
        <Setter Property="Popup.PopupAnimation" Value="None" />
        <Setter Property="SnapsToDevicePixels" Value="True" />
        <Setter Property="OverridesDefaultStyle" Value="True" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ContextMenu}">
                    <Border
                        Background="{TemplateBinding Background}"
                        BorderBrush="{TemplateBinding BorderBrush}"
                        BorderThickness="1"
                        CornerRadius="8"
                        Padding="0,3,0,3"
                        x:Name="Border">
                        <Border.RenderTransform>
                            <TranslateTransform />
                        </Border.RenderTransform>
                        <StackPanel
                            ClipToBounds="True"
                            IsItemsHost="True"
                            KeyboardNavigation.DirectionalNavigation="Cycle"
                            Orientation="Vertical" />
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsOpen" Value="True">
                            <Trigger.EnterActions>
                                <BeginStoryboard>
                                    <Storyboard>
                                        <DoubleAnimation
                                            Duration="00:00:00.167"
                                            From="-90"
                                            Storyboard.TargetName="Border"
                                            Storyboard.TargetProperty="(Border.RenderTransform).(TranslateTransform.Y)"
                                            To="0">
                                            <DoubleAnimation.EasingFunction>
                                                <CircleEase EasingMode="EaseOut" />
                                            </DoubleAnimation.EasingFunction>
                                        </DoubleAnimation>
                                    </Storyboard>
                                </BeginStoryboard>
                            </Trigger.EnterActions>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <Style BasedOn="{StaticResource UiContextMenu}" TargetType="{x:Type ContextMenu}" />

</ResourceDictionary>