fine tuning of the Snackbar animation

Author: spiegelp

MaterialDesignThemes.Wpf/Themes/MaterialDesignTheme.Snackbar.xaml

@@ -77,7 +77,7 @@
                                             </DoubleAnimation.EasingFunction>
                                         </DoubleAnimation>
                                         <DoubleAnimation Storyboard.TargetName="PART_contentGrid" Storyboard.TargetProperty="Opacity" To="0" BeginTime="0" Duration="0" />
-                                        <DoubleAnimation Storyboard.TargetName="PART_contentGrid" Storyboard.TargetProperty="Opacity" From="0" To="1" BeginTime="0" Duration="0:0:0.3">
+                                        <DoubleAnimation Storyboard.TargetName="PART_contentGrid" Storyboard.TargetProperty="Opacity" From="0" To="1" BeginTime="0:0:0.05" Duration="0:0:0.25">
                                             <DoubleAnimation.EasingFunction>
                                                 <QuarticEase EasingMode="EaseOut" />
                                             </DoubleAnimation.EasingFunction>