diff --git a/src/Semi.Avalonia/Controls/ScrollViewer.axaml b/src/Semi.Avalonia/Controls/ScrollViewer.axaml
index 5f298b6..6e866ff 100644
--- a/src/Semi.Avalonia/Controls/ScrollViewer.axaml
+++ b/src/Semi.Avalonia/Controls/ScrollViewer.axaml
@@ -1,7 +1,6 @@
 <ResourceDictionary
     xmlns="https://github.com/avaloniaui"
-    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:converters="using:Avalonia.Controls.Converters">
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
     <Design.PreviewWith>
         <StackPanel>
             <ScrollBar Width="200" Orientation="Horizontal" />
@@ -310,52 +309,4 @@
             </ControlTemplate>
         </Setter>
     </ControlTheme>
-
-    <ControlTheme x:Key="SimpleMenuScrollViewer" TargetType="ScrollViewer">
-        <Setter Property="Background" Value="Transparent" />
-        <Setter Property="Template">
-            <ControlTemplate TargetType="ScrollViewer">
-                <DockPanel>
-                    <RepeatButton
-                        Background="Transparent"
-                        BorderThickness="0"
-                        Command="{Binding LineUp, RelativeSource={RelativeSource TemplatedParent}}"
-                        DockPanel.Dock="Top">
-                        <RepeatButton.IsVisible>
-                            <MultiBinding Converter="{x:Static converters:MenuScrollingVisibilityConverter.Instance}" ConverterParameter="0">
-                                <Binding Path="VerticalScrollBarVisibility" RelativeSource="{RelativeSource TemplatedParent}" />
-                                <Binding Path="Offset.Y" RelativeSource="{RelativeSource TemplatedParent}" />
-                                <Binding Path="Extent.Height" RelativeSource="{RelativeSource TemplatedParent}" />
-                                <Binding Path="Viewport.Height" RelativeSource="{RelativeSource TemplatedParent}" />
-                            </MultiBinding>
-                        </RepeatButton.IsVisible>
-                        <Path Data="M 0 4 L 8 4 L 4 0 Z" />
-                    </RepeatButton>
-                    <RepeatButton
-                        Background="Transparent"
-                        BorderThickness="0"
-                        Command="{Binding LineDown, RelativeSource={RelativeSource TemplatedParent}}"
-                        DockPanel.Dock="Bottom">
-                        <RepeatButton.IsVisible>
-                            <MultiBinding Converter="{x:Static converters:MenuScrollingVisibilityConverter.Instance}" ConverterParameter="100">
-                                <Binding Path="VerticalScrollBarVisibility" RelativeSource="{RelativeSource TemplatedParent}" />
-                                <Binding Path="Offset.Y" RelativeSource="{RelativeSource TemplatedParent}" />
-                                <Binding Path="Extent.Height" RelativeSource="{RelativeSource TemplatedParent}" />
-                                <Binding Path="Viewport.Height" RelativeSource="{RelativeSource TemplatedParent}" />
-                            </MultiBinding>
-                        </RepeatButton.IsVisible>
-                        <Path Data="M 0 0 L 4 4 L 8 0 Z" />
-                    </RepeatButton>
-                    <ScrollContentPresenter Name="PART_ContentPresenter" Margin="{TemplateBinding Padding}" />
-                </DockPanel>
-            </ControlTemplate>
-        </Setter>
-        <Style Selector="^ /template/ RepeatButton > Path">
-            <Setter Property="Fill" Value="{DynamicResource ColorScrollBarButtonDefaultForeground}" />
-        </Style>
-
-        <Style Selector="^ /template/ RepeatButton:pointerover > Path">
-            <Setter Property="Fill" Value="{DynamicResource ColorScrollBarButtonPointeroverForeground}" />
-        </Style>
-    </ControlTheme>
 </ResourceDictionary>
\ No newline at end of file