diff --git a/HandyControl/Themes/Styles/Base/ComboBoxBaseStyle.xaml b/HandyControl/Themes/Styles/Base/ComboBoxBaseStyle.xaml
index 174aa0e2..c3654c56 100644
--- a/HandyControl/Themes/Styles/Base/ComboBoxBaseStyle.xaml
+++ b/HandyControl/Themes/Styles/Base/ComboBoxBaseStyle.xaml
@@ -515,7 +515,7 @@
         <Setter Property="ScrollViewer.CanContentScroll" Value="true"/>
         <Setter Property="ScrollViewer.PanningMode" Value="Both"/>
         <Setter Property="Stylus.IsFlicksEnabled" Value="False"/>
-        <Setter Property="Padding" Value="9,6,0,6"/>
+        <Setter Property="Padding" Value="10,6"/>
         <Setter Property="Template" Value="{StaticResource ComboBoxTemplate}"/>
         <Setter Property="VerticalContentAlignment" Value="Center"/>
         <Style.Triggers>
@@ -576,7 +576,7 @@
                 <ColumnDefinition/>
                 <ColumnDefinition Width="Auto" MinWidth="30"/>
             </Grid.ColumnDefinitions>
-            <StackPanel Grid.ColumnSpan="2" Visibility="{Binding Path=(controls:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource String2VisibilityConverter}}" Orientation="Horizontal" Margin="7,4">
+            <StackPanel Grid.ColumnSpan="2" Visibility="{Binding Path=(controls:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource String2VisibilityConverter}}" Orientation="Horizontal" Margin="{TemplateBinding Padding}">
                 <TextBlock Margin="1,0,0,0" Text="{Binding Path=(controls:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
                 <ContentPresenter TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(controls:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(controls:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
             </StackPanel>
@@ -592,9 +592,11 @@
                     </ScrollViewer>
                 </Border>
             </Popup>
-            <TextBlock Grid.Column="0" Grid.ColumnSpan="2" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="8,0,0,4" Foreground="{DynamicResource DangerBrush}" Grid.Row="1"/>
-            <ToggleButton Grid.Row="1" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
-            <ContentPresenter Margin="8,8,2,7" Grid.Row="1" Grid.Column="0" x:Name="contentPresenter" ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}" ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}" Content="{TemplateBinding SelectionBoxItem}" ContentStringFormat="{TemplateBinding SelectionBoxItemStringFormat}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" IsHitTestVisible="false" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
+            <TextBlock Grid.Column="0" Grid.ColumnSpan="2" FontSize="12" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="8,0,0,4" Foreground="{DynamicResource DangerBrush}" Grid.Row="1"/>
+            <ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(controls:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
+            <Border Grid.Row="1" Grid.Column="0" Margin="1,0">
+                <ContentPresenter Margin="{TemplateBinding Padding}" x:Name="contentPresenter" ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}" ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}" Content="{TemplateBinding SelectionBoxItem}" ContentStringFormat="{TemplateBinding SelectionBoxItemStringFormat}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" IsHitTestVisible="false" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
+            </Border>
             <Button Grid.Row="1" Command="interactivity:ControlCommands.Clear" Margin="0,0,26,0" Visibility="Collapsed" Name="ButtonClear" Width="16" Grid.Column="1" Style="{StaticResource ButtonIcon}" Padding="0,6" controls:IconElement.Geometry="{StaticResource DeleteFillCircleGeometry}" Foreground="{TemplateBinding BorderBrush}"/>
         </Grid>
         <ControlTemplate.Triggers>
@@ -691,9 +693,11 @@
                     </ScrollViewer>
                 </Border>
             </Popup>
-            <TextBlock Grid.Column="1" Grid.ColumnSpan="2" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="8,0,0,4" Foreground="{DynamicResource DangerBrush}"/>
-            <ToggleButton Grid.Column="1" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
-            <ContentPresenter Margin="8,8,2,7" Grid.Column="1" x:Name="contentPresenter" ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}" ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}" Content="{TemplateBinding SelectionBoxItem}" ContentStringFormat="{TemplateBinding SelectionBoxItemStringFormat}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" IsHitTestVisible="false" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
+            <TextBlock Grid.Column="1" Grid.ColumnSpan="2" FontSize="12" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="8,0,0,4" Foreground="{DynamicResource DangerBrush}"/>
+            <ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(controls:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
+            <Border Grid.Column="1" Margin="1,0">
+                <ContentPresenter Margin="{TemplateBinding Padding}" x:Name="contentPresenter" ContentTemplate="{TemplateBinding SelectionBoxItemTemplate}" ContentTemplateSelector="{TemplateBinding ItemTemplateSelector}" Content="{TemplateBinding SelectionBoxItem}" ContentStringFormat="{TemplateBinding SelectionBoxItemStringFormat}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" IsHitTestVisible="false" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
+            </Border>
             <Button Command="interactivity:ControlCommands.Clear" Margin="0,0,26,0" Visibility="Collapsed" Name="ButtonClear" Width="16" Grid.Column="2" Style="{StaticResource ButtonIcon}" Padding="0,6" controls:IconElement.Geometry="{StaticResource DeleteFillCircleGeometry}" Foreground="{TemplateBinding BorderBrush}"/>
         </Grid>
         <ControlTemplate.Triggers>
@@ -777,7 +781,7 @@
                 <ColumnDefinition/>
                 <ColumnDefinition Width="Auto" MinWidth="30"/>
             </Grid.ColumnDefinitions>
-            <StackPanel Grid.ColumnSpan="2" Visibility="{Binding Path=(controls:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource String2VisibilityConverter}}" Orientation="Horizontal" Margin="7,4">
+            <StackPanel Grid.ColumnSpan="2" Visibility="{Binding Path=(controls:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource String2VisibilityConverter}}" Orientation="Horizontal" Margin="{TemplateBinding Padding}">
                 <TextBlock Margin="1,0,0,0" Text="{Binding Path=(controls:InfoElement.Title),RelativeSource={RelativeSource TemplatedParent}}"/>
                 <ContentPresenter TextElement.Foreground="{DynamicResource DangerBrush}" Margin="4,0,0,0" Content="{Binding Path=(controls:InfoElement.Symbol),RelativeSource={RelativeSource TemplatedParent}}" Visibility="{Binding Path=(controls:InfoElement.Necessary),RelativeSource={RelativeSource TemplatedParent},Converter={StaticResource Boolean2VisibilityConverter}}"/>
             </StackPanel>
@@ -793,11 +797,10 @@
                     </ScrollViewer>
                 </Border>
             </Popup>
-            <TextBlock Grid.Column="0" Grid.ColumnSpan="2" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="8,0,0,4" Foreground="{DynamicResource DangerBrush}" Grid.Row="1"/>
-            <ToggleButton Grid.Row="1" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxToggleButton}"/>
-            <TextBlock x:Name="Placeholder" Margin="8,7,8,8" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Grid.Column="0" Grid.Row="1" Visibility="{TemplateBinding Text,Converter={StaticResource String2VisibilityReConverter}}" HorizontalAlignment="Stretch" Style="{StaticResource TextBlockDefaultThiLight}" Text="{Binding Path=(controls:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}"/>
-            <Border Grid.Row="1" Grid.Column="0" x:Name="border" Background="Transparent" Margin="4,1">
-                <TextBox Padding="2,6,2,7" x:Name="PART_EditableTextBox" Background="{TemplateBinding Background}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" IsReadOnly="{Binding IsReadOnly, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxEditableTextBox}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
+            <TextBlock Grid.Column="0" Grid.ColumnSpan="2" FontSize="12" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="8,0,0,4" Foreground="{DynamicResource DangerBrush}" Grid.Row="1"/>
+            <ToggleButton Grid.Row="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(controls:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" Grid.Column="0" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
+            <Border Grid.Row="1" Grid.Column="0" x:Name="border" Margin="-1,1">
+                <TextBox x:Name="PART_EditableTextBox" Padding="{TemplateBinding Padding}" Background="{TemplateBinding Background}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" IsReadOnly="{Binding IsReadOnly, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxEditableTextBox}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
             </Border>
             <Button Grid.Column="1" Grid.Row="1" Command="interactivity:ControlCommands.Clear" Margin="0,0,26,0" Visibility="Collapsed" Name="ButtonClear" Width="16" Style="{StaticResource ButtonIcon}" Padding="0,6" controls:IconElement.Geometry="{StaticResource DeleteFillCircleGeometry}" Foreground="{TemplateBinding BorderBrush}"/>
         </Grid>
@@ -879,7 +882,6 @@
             </Trigger>
             <Trigger Property="IsEnabled" Value="false">
                 <Setter Property="Opacity" Value="0.4" TargetName="toggleButton"/>
-                <Setter Property="Opacity" Value="0.4" TargetName="Placeholder"/>
                 <Setter Property="Opacity" Value="0.4" TargetName="border"/>
             </Trigger>
         </ControlTemplate.Triggers>
@@ -918,10 +920,9 @@
                 </Border>
             </Popup>
             <TextBlock Grid.Column="1" Grid.ColumnSpan="2" Text="{TemplateBinding ErrorStr}" Name="TextBlockError" VerticalAlignment="Bottom" Margin="8,0,0,4" Foreground="{DynamicResource DangerBrush}"/>
-            <ToggleButton Grid.Column="1" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxToggleButton}"/>
-            <TextBlock x:Name="Placeholder" Margin="8,7,8,8" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Grid.Column="1" Visibility="{TemplateBinding Text,Converter={StaticResource String2VisibilityReConverter}}" HorizontalAlignment="Stretch" Style="{StaticResource TextBlockDefaultThiLight}" Text="{Binding Path=(controls:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}"/>
-            <Border Grid.Column="1" x:Name="border" Background="Transparent" Margin="4,1">
-                <TextBox Padding="2,6,2,7" x:Name="PART_EditableTextBox" Background="{TemplateBinding Background}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" IsReadOnly="{Binding IsReadOnly, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxEditableTextBox}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
+            <ToggleButton Grid.Column="1" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" Content="{Binding Path=(controls:InfoElement.Placeholder),RelativeSource={RelativeSource TemplatedParent}}" x:Name="toggleButton" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="2" IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxWatermarkToggleButton}"/>
+            <Border Grid.Column="1" x:Name="border" Background="Transparent" Margin="-1,1">
+                <TextBox x:Name="PART_EditableTextBox" Padding="{TemplateBinding Padding}" Background="{TemplateBinding Background}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" IsReadOnly="{Binding IsReadOnly, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ComboBoxEditableTextBox}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
             </Border>
             <Button Command="interactivity:ControlCommands.Clear" Margin="0,0,26,0" Visibility="Collapsed" Name="ButtonClear" Width="16" Grid.Column="2" Style="{StaticResource ButtonIcon}" Padding="0,6" controls:IconElement.Geometry="{StaticResource DeleteFillCircleGeometry}" Foreground="{TemplateBinding BorderBrush}"/>
         </Grid>
@@ -1003,7 +1004,6 @@
             </Trigger>
             <Trigger Property="IsEnabled" Value="false">
                 <Setter Property="Opacity" Value="0.4" TargetName="toggleButton"/>
-                <Setter Property="Opacity" Value="0.4" TargetName="Placeholder"/>
                 <Setter Property="Opacity" Value="0.4" TargetName="border"/>
             </Trigger>
         </ControlTemplate.Triggers>
@@ -1037,5 +1037,4 @@
         </Style.Triggers>
     </Style>
 
-
 </ResourceDictionary>
\ No newline at end of file