diff --git a/src/Shared/HandyControl_Shared/Controls/Panel/ClipGrid.cs b/src/Shared/HandyControl_Shared/Controls/Panel/ClipGrid.cs
new file mode 100644
index 00000000..7ddcd61a
--- /dev/null
+++ b/src/Shared/HandyControl_Shared/Controls/Panel/ClipGrid.cs
@@ -0,0 +1,29 @@
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Media;
+using HandyControl.Data;
+
+namespace HandyControl.Controls
+{
+    public class ClipGrid : Grid
+    {
+        public static readonly DependencyProperty IsClipEnabledProperty = DependencyProperty.Register(
+            "IsClipEnabled", typeof(bool), typeof(ClipGrid), new PropertyMetadata(ValueBoxes.TrueBox));
+
+        public bool IsClipEnabled
+        {
+            get => (bool) GetValue(IsClipEnabledProperty);
+            set => SetValue(IsClipEnabledProperty, ValueBoxes.BooleanBox(value));
+        }
+
+        protected override Geometry GetLayoutClip(Size layoutSlotSize)
+        {
+            if (IsClipEnabled)
+            {
+                return base.GetLayoutClip(layoutSlotSize);
+            }
+
+            return null;
+        }
+    }
+}
diff --git a/src/Shared/HandyControl_Shared/Controls/Ribbon/Ribbon.cs b/src/Shared/HandyControl_Shared/Controls/Ribbon/Ribbon.cs
index 9f11bf14..3a079210 100644
--- a/src/Shared/HandyControl_Shared/Controls/Ribbon/Ribbon.cs
+++ b/src/Shared/HandyControl_Shared/Controls/Ribbon/Ribbon.cs
@@ -5,20 +5,33 @@ using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Controls.Primitives;
 using System.Windows.Input;
+using System.Windows.Media.Animation;
 using HandyControl.Data;
 using HandyControl.Interactivity;
 
 namespace HandyControl.Controls
 {
     [TemplatePart(Name = TabHeaderItemsControl, Type = typeof(ItemsControl))]
+    [TemplatePart(Name = RootPanel, Type = typeof(Panel))]
+    [TemplatePart(Name = ContentPanel, Type = typeof(Panel))]
     public class Ribbon : Selector
     {
         private const string TabHeaderItemsControl = "PART_TabHeaderItemsControl";
 
+        private const string RootPanel = "PART_RootPanel";
+
+        private const string ContentPanel = "PART_ContentPanel";
+
         private ItemsControl _tabHeaderItemsControl;
 
+        private Panel _rootPanel;
+
+        private Panel _contentPanel;
+
         private System.Windows.Window _window;
 
+        private double _originHeight;
+
         private readonly ObservableCollection<object> _tabHeaderItemsSource = new();
 
         internal ItemsControl RibbonTabHeaderItemsControl => _tabHeaderItemsControl;
@@ -45,7 +58,23 @@ namespace HandyControl.Controls
             => (Ribbon) element.GetValue(RibbonProperty);
 
         public static readonly DependencyProperty IsDropDownOpenProperty = DependencyProperty.Register(
-            "IsDropDownOpen", typeof(bool), typeof(Ribbon), new PropertyMetadata(ValueBoxes.TrueBox));
+            "IsDropDownOpen", typeof(bool), typeof(Ribbon), new PropertyMetadata(ValueBoxes.TrueBox, OnIsDropDownOpenChanged));
+
+        private static void OnIsDropDownOpenChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
+        {
+            ((Ribbon) d).OnIsDropDownOpenChanged((bool) e.NewValue);
+        }
+
+        private void OnIsDropDownOpenChanged(bool isDropDownOpen)
+        {
+            if (_contentPanel == null)
+            {
+                return;
+            }
+
+            var animation = isDropDownOpen ? CreateAnimation(0, ContentHeight) : CreateAnimation(ContentHeight, 0);
+            _contentPanel.BeginAnimation(HeightProperty, animation);
+        }
 
         public bool IsDropDownOpen
         {
@@ -54,7 +83,25 @@ namespace HandyControl.Controls
         }
 
         public static readonly DependencyProperty IsMinimizedProperty = DependencyProperty.Register(
-            "IsMinimized", typeof(bool), typeof(Ribbon), new PropertyMetadata(ValueBoxes.FalseBox));
+            "IsMinimized", typeof(bool), typeof(Ribbon), new PropertyMetadata(ValueBoxes.FalseBox, OnIsMinimizedChanged));
+
+        private static void OnIsMinimizedChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
+        {
+            ((Ribbon) d).OnIsMinimizedChanged((bool) e.NewValue);
+        }
+
+        private void OnIsMinimizedChanged(bool isMinimized)
+        {
+            if (_tabHeaderItemsControl == null || _rootPanel == null)
+            {
+                return;
+            }
+
+            var animation = isMinimized
+                ? CreateAnimation(_originHeight, _tabHeaderItemsControl.ActualHeight)
+                : CreateAnimation(_tabHeaderItemsControl.ActualHeight, _originHeight);
+            _rootPanel.BeginAnimation(HeightProperty, animation);
+        }
 
         public bool IsMinimized
         {
@@ -80,6 +127,21 @@ namespace HandyControl.Controls
             {
                 _tabHeaderItemsControl.ItemsSource = _tabHeaderItemsSource;
             }
+
+            _rootPanel = GetTemplateChild(RootPanel) as Panel;
+            _contentPanel = GetTemplateChild(ContentPanel) as Panel;
+
+            _originHeight = MeasureOverride(new Size(double.MaxValue, double.MaxValue)).Height;
+
+            if (IsMinimized)
+            {
+                _rootPanel.SetCurrentValue(HeightProperty, _tabHeaderItemsControl.ActualHeight);
+            }
+
+            if (!IsDropDownOpen)
+            {
+                _contentPanel.SetCurrentValue(HeightProperty, .0);
+            }
         }
 
         internal void ResetSelection()
@@ -208,8 +270,6 @@ namespace HandyControl.Controls
                 _window.PreviewMouseRightButtonDown += Window_PreviewMouseRightButtonDown;
                 _window.PreviewMouseRightButtonUp += Window_PreviewMouseRightButtonUp;
             }
-
-            UpdateLayout();
         }
 
         private void Ribbon_Unloaded(object sender, RoutedEventArgs e)
@@ -273,6 +333,12 @@ namespace HandyControl.Controls
 
         private void InitializeSelection()
         {
+            if (!IsDropDownOpen)
+            {
+                SelectedIndex = -1;
+                return;
+            }
+
             if (SelectedIndex >= 0 || Items.Count <= 0)
             {
                 return;
@@ -316,5 +382,16 @@ namespace HandyControl.Controls
                 _tabHeaderItemsSource.RemoveAt(itemsCount);
             }
         }
+
+        private static DoubleAnimation CreateAnimation(double fromValue, double toValue, double milliseconds = 200)
+        {
+            return new(fromValue, toValue, new Duration(TimeSpan.FromMilliseconds(milliseconds)))
+            {
+                EasingFunction = new PowerEase
+                {
+                    EasingMode = EasingMode.EaseInOut
+                }
+            };
+        }
     }
 }
diff --git a/src/Shared/HandyControl_Shared/Controls/Ribbon/RibbonTabsPanel.cs b/src/Shared/HandyControl_Shared/Controls/Ribbon/RibbonTabsPanel.cs
deleted file mode 100644
index 17d2986b..00000000
--- a/src/Shared/HandyControl_Shared/Controls/Ribbon/RibbonTabsPanel.cs
+++ /dev/null
@@ -1,11 +0,0 @@
-using System.Windows;
-using System.Windows.Controls;
-using System.Windows.Media;
-
-namespace HandyControl.Controls
-{
-    public class RibbonTabsPanel : Grid
-    {
-        protected override Geometry GetLayoutClip(Size layoutSlotSize) => null;
-    }
-}
diff --git a/src/Shared/HandyControl_Shared/HandyControl_Shared.projitems b/src/Shared/HandyControl_Shared/HandyControl_Shared.projitems
index ce129c44..bf21b230 100644
--- a/src/Shared/HandyControl_Shared/HandyControl_Shared.projitems
+++ b/src/Shared/HandyControl_Shared/HandyControl_Shared.projitems
@@ -52,6 +52,7 @@
     <Compile Include="$(MSBuildThisFileDirectory)Controls\Other\Poptip.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Controls\Other\Watermark.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Controls\Panel\AxleCanvas.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Controls\Panel\ClipGrid.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Controls\Panel\FlexPanel.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Controls\Panel\ElementGroup.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Controls\Panel\SimpleStackPanel.cs" />
@@ -78,7 +79,6 @@
     <Compile Include="$(MSBuildThisFileDirectory)Controls\Ribbon\RibbonTabHeader.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Controls\Ribbon\RibbonTabHeaderItemsControl.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Controls\Ribbon\RibbonTabHeadersPanel.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)Controls\Ribbon\RibbonTabsPanel.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Controls\Screenshot\Screenshot.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Controls\Other\Sprite.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Controls\Block\ToggleBlock.cs" />
diff --git a/src/Shared/HandyControl_Shared/Themes/Styles/Ribbon.xaml b/src/Shared/HandyControl_Shared/Themes/Styles/Ribbon.xaml
index 6e75125f..9a3ea6e6 100644
--- a/src/Shared/HandyControl_Shared/Themes/Styles/Ribbon.xaml
+++ b/src/Shared/HandyControl_Shared/Themes/Styles/Ribbon.xaml
@@ -119,27 +119,22 @@
         <Setter Property="Template">
             <Setter.Value>
                 <ControlTemplate TargetType="hc:Ribbon">
-                    <hc:RibbonTabsPanel x:Name="TabsPanel">
+                    <hc:ClipGrid x:Name="PART_RootPanel" IsClipEnabled="False">
                         <Grid.RowDefinitions>
                             <RowDefinition Height="Auto"/>
                             <RowDefinition Height="Auto"/>
                         </Grid.RowDefinitions>
-                        <Grid x:Name="MainContentGrid" Grid.Row="1" RenderTransformOrigin="0.5,0.5">
-                            <Grid.RenderTransform>
-                                <TransformGroup>
-                                    <TranslateTransform/>
-                                </TransformGroup>
-                            </Grid.RenderTransform>
+                        <Grid x:Name="PART_ContentPanel" Grid.Row="1">
                             <Grid.ColumnDefinitions>
                                 <ColumnDefinition/>
                                 <ColumnDefinition Width="Auto"/>
                             </Grid.ColumnDefinitions>
-                            <Border Margin="10,0" Height="{TemplateBinding ContentHeight}" Grid.ColumnSpan="2" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}" Background="{DynamicResource RegionBrush}">
+                            <Border Margin="10,0" VerticalAlignment="Bottom" Height="{TemplateBinding ContentHeight}" Grid.ColumnSpan="2" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}" Background="{DynamicResource RegionBrush}">
                                 <Border.Effect>
                                     <DropShadowEffect BlurRadius="8" ShadowDepth="2" Direction="-90" Color="{StaticResource EffectShadowColor}" Opacity=".1" RenderingBias="Performance"/>
                                 </Border.Effect>
                             </Border>
-                            <ItemsPresenter Grid.Column="0" Margin="10,0,0,0"/>
+                            <ItemsPresenter VerticalAlignment="Bottom" Height="{TemplateBinding ContentHeight}" Grid.Column="0" Margin="10,0,0,0"/>
                             <ToggleButton Command="interactivity:ControlCommands.Switch" IsChecked="{Binding IsMinimized,RelativeSource={RelativeSource TemplatedParent},Mode=TwoWay}" Margin="0,0,10,0" Padding="5" Width="20" Height="20" Grid.Column="1" HorizontalAlignment="Right" VerticalAlignment="Bottom" Style="{StaticResource ToggleButtonIconTransparent}" hc:IconElement.Geometry="{StaticResource UpGeometry}" hc:IconSwitchElement.GeometrySelected="{StaticResource NailGeometry}"/>
                         </Grid>
                         <hc:RibbonTabHeaderItemsControl Grid.Row="0" Background="{TemplateBinding Background}" Focusable="False" x:Name="PART_TabHeaderItemsControl" Margin="0,0,0,2">
@@ -149,15 +144,7 @@
                                 </ItemsPanelTemplate>
                             </ItemsControl.ItemsPanel>
                         </hc:RibbonTabHeaderItemsControl>
-                    </hc:RibbonTabsPanel>
-                    <ControlTemplate.Triggers>
-                        <Trigger Property="IsMinimized" Value="True">
-                            <Setter TargetName="TabsPanel" Property="Height" Value="{Binding ActualHeight,ElementName=PART_TabHeaderItemsControl}"/>
-                        </Trigger>
-                        <Trigger Property="IsDropDownOpen" Value="False">
-                            <Setter TargetName="MainContentGrid" Property="Visibility" Value="Collapsed"/>
-                        </Trigger>
-                    </ControlTemplate.Triggers>
+                    </hc:ClipGrid>
                 </ControlTemplate>
             </Setter.Value>
         </Setter>