diff --git a/PacticeSolution/PacticeSolution.sln b/PacticeSolution/PacticeSolution.sln
index 80a1a06..1a8d681 100644
--- a/PacticeSolution/PacticeSolution.sln
+++ b/PacticeSolution/PacticeSolution.sln
@@ -125,13 +125,15 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "LinqInNotIn", "LinqInNotIn\
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "EntityFrameworkSample", "EntityFrameworkSample\EntityFrameworkSample.csproj", "{AAEF47BF-A410-4A4D-942B-D9A1F4AA1343}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MediaPlayer", "MediaPlayer\MediaPlayer.csproj", "{0E7DB4A2-B598-452B-B1B4-CF36685D0D53}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "MediaPlayer", "MediaPlayer\MediaPlayer.csproj", "{0E7DB4A2-B598-452B-B1B4-CF36685D0D53}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Speech", "Speech\Speech.csproj", "{248DDC0C-F8C0-4687-BBC2-71C7C310537E}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Speech", "Speech\Speech.csproj", "{248DDC0C-F8C0-4687-BBC2-71C7C310537E}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TimerAndWorker", "TimerAndWorker\TimerAndWorker.csproj", "{6210631F-C8DF-45DC-B53E-3119E8BDFF9E}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TimerAndWorker", "TimerAndWorker\TimerAndWorker.csproj", "{6210631F-C8DF-45DC-B53E-3119E8BDFF9E}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TreeViewSample", "TreeViewSample\TreeViewSample.csproj", "{CA88EE83-8C7F-4FEF-963A-DEACA5E502FB}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TreeViewSample", "TreeViewSample\TreeViewSample.csproj", "{CA88EE83-8C7F-4FEF-963A-DEACA5E502FB}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TriggerAnimations", "TriggerAnimations\TriggerAnimations.csproj", "{9D9FD436-C73C-4DB4-A311-09D2DB65E03E}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -399,6 +401,10 @@ Global
 		{CA88EE83-8C7F-4FEF-963A-DEACA5E502FB}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{CA88EE83-8C7F-4FEF-963A-DEACA5E502FB}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{CA88EE83-8C7F-4FEF-963A-DEACA5E502FB}.Release|Any CPU.Build.0 = Release|Any CPU
+		{9D9FD436-C73C-4DB4-A311-09D2DB65E03E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{9D9FD436-C73C-4DB4-A311-09D2DB65E03E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{9D9FD436-C73C-4DB4-A311-09D2DB65E03E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{9D9FD436-C73C-4DB4-A311-09D2DB65E03E}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/PacticeSolution/TreeViewSample/MainWindow.xaml b/PacticeSolution/TreeViewSample/MainWindow.xaml
index 4bc7e94..148ac04 100644
--- a/PacticeSolution/TreeViewSample/MainWindow.xaml
+++ b/PacticeSolution/TreeViewSample/MainWindow.xaml
@@ -60,7 +60,7 @@
             </TreeViewItem>
         </TreeView>
         
-        <TreeView x:Name="trvStructure" Grid.Row="2" Margin="10" 
+        <TreeView x:Name="trvStructure" Grid.Row="2" Margin="10" %
                   TreeViewItem.Expanded="trvStructure_Expanded"/>
     </Grid>
 </Window>
diff --git a/PacticeSolution/TriggerAnimations/App.xaml b/PacticeSolution/TriggerAnimations/App.xaml
new file mode 100644
index 0000000..b739922
--- /dev/null
+++ b/PacticeSolution/TriggerAnimations/App.xaml
@@ -0,0 +1,9 @@
+<Application x:Class="TriggerAnimations.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:TriggerAnimations"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>
diff --git a/PacticeSolution/TriggerAnimations/App.xaml.cs b/PacticeSolution/TriggerAnimations/App.xaml.cs
new file mode 100644
index 0000000..cb948e6
--- /dev/null
+++ b/PacticeSolution/TriggerAnimations/App.xaml.cs
@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Data;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace TriggerAnimations
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}
diff --git a/PacticeSolution/TriggerAnimations/AssemblyInfo.cs b/PacticeSolution/TriggerAnimations/AssemblyInfo.cs
new file mode 100644
index 0000000..8b5504e
--- /dev/null
+++ b/PacticeSolution/TriggerAnimations/AssemblyInfo.cs
@@ -0,0 +1,10 @@
+using System.Windows;
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+                                     //(used if a resource is not found in the page,
+                                     // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+                                              //(used if a resource is not found in the page,
+                                              // app, or any theme specific resource dictionaries)
+)]
diff --git a/PacticeSolution/TriggerAnimations/MainWindow.xaml b/PacticeSolution/TriggerAnimations/MainWindow.xaml
new file mode 100644
index 0000000..35612da
--- /dev/null
+++ b/PacticeSolution/TriggerAnimations/MainWindow.xaml
@@ -0,0 +1,39 @@
+<Window x:Class="TriggerAnimations.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:TriggerAnimations"
+        mc:Ignorable="d"
+        Title="MainWindow" Height="200" Width="200">
+    <Grid>
+        <Border Background="LightGreen" Width="100" Height="100" BorderBrush="Green">
+            <Border.Style>
+                <Style TargetType="Border">
+                    <Style.Triggers>
+                        <Trigger Property="IsMouseOver" Value="True">
+                            <Trigger.EnterActions>
+                                <BeginStoryboard>
+                                    <Storyboard>
+                                        <ThicknessAnimation Duration="0:0:0.400" To="3" Storyboard.TargetProperty="BorderThickness"/>
+                                        <DoubleAnimation Duration="0:0:0.300" To="125" Storyboard.TargetProperty="Height"/>
+                                        <DoubleAnimation Duration="0:0:0.300" To="125" Storyboard.TargetProperty="Width"/>
+                                    </Storyboard>
+                                </BeginStoryboard>
+                            </Trigger.EnterActions>
+                            <Trigger.ExitActions>
+                                <BeginStoryboard>
+                                    <Storyboard>
+                                        <ThicknessAnimation Duration="0:0:0.400" To="0" Storyboard.TargetProperty="BorderThickness"/>
+                                        <DoubleAnimation Duration="0:0:0.300" To="100" Storyboard.TargetProperty="Height"/>
+                                        <DoubleAnimation Duration="0:0:0.300" To="100" Storyboard.TargetProperty="Width"/>
+                                    </Storyboard>
+                                </BeginStoryboard>
+                            </Trigger.ExitActions>
+                        </Trigger>
+                    </Style.Triggers>
+                </Style>
+            </Border.Style>
+        </Border>
+    </Grid>
+</Window>
diff --git a/PacticeSolution/TriggerAnimations/MainWindow.xaml.cs b/PacticeSolution/TriggerAnimations/MainWindow.xaml.cs
new file mode 100644
index 0000000..fcd33af
--- /dev/null
+++ b/PacticeSolution/TriggerAnimations/MainWindow.xaml.cs
@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace TriggerAnimations
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        public MainWindow()
+        {
+            InitializeComponent();
+        }
+    }
+}
diff --git a/PacticeSolution/TriggerAnimations/TriggerAnimations.csproj b/PacticeSolution/TriggerAnimations/TriggerAnimations.csproj
new file mode 100644
index 0000000..4106cb0
--- /dev/null
+++ b/PacticeSolution/TriggerAnimations/TriggerAnimations.csproj
@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net6.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
+
+</Project>