WPF,请问动画重叠
<Window.Resources>
<Style x:Key="熊俊">
<Style.Triggers>
<EventTrigger RoutedEvent="ListBoxItem.MouseEnter">
<EventTrigger.Actions>
<BeginStoryboard >
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="FontSize" To="30" Duration="0:0:0.2" />
</Storyboard>
</BeginStoryboard>
</EventTrigger.Actions>
</EventTrigger>
<EventTrigger RoutedEvent="ListBoxItem.MouseLeave">
<EventTrigger.Actions>
<BeginStoryboard HandoffBehavior="SnapshotAndReplace">
<Storyboard>
<DoubleAnimation Storyboard.TargetProperty="FontSize" BeginTime="0:0:0.5" Duration="0:0:0.2" />
</Storyboard>
</BeginStoryboard>
</EventTrigger.Actions>
</EventTrigger>
</Style.Triggers>
</Style>
</Window.Resources>
<Grid Height="297" Name="grid1" Width="380">
<ListBox Height="157" HorizontalAlignment="Left" Margin="59,32,0,0" Name="listBox1" VerticalAlignment="Top" Width="195">
<ListBoxItem Content="张三" Style="{StaticResource 熊俊}"/>
<ListBoxItem Content="李四" Style="{StaticResource 熊俊}" />
</ListBox>
</Grid>