diff --git a/LivreLand/View/ContactsView.xaml b/LivreLand/View/ContactsView.xaml
index abf8b25..7766c12 100644
--- a/LivreLand/View/ContactsView.xaml
+++ b/LivreLand/View/ContactsView.xaml
@@ -27,6 +27,8 @@
                     <RowDefinition Height="40"/>
                     <RowDefinition Height="10"/>
                     <RowDefinition Height="auto"/>
+                    <RowDefinition Height="10"/>
+                    <RowDefinition Height="auto"/>
                 </Grid.RowDefinitions>
                 <Grid BackgroundColor="{AppThemeBinding Light={StaticResource HeaderGray}, Dark={StaticResource Gray900}}"
                       Grid.Row="0">
@@ -41,12 +43,41 @@
                            Style="{StaticResource HeaderCollectionViewText}"
                            Grid.Column="1"/>
                 </Grid>
+                <Grid HorizontalOptions="Center"
+                      Grid.Column="2">
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="*"/>
+                        <ColumnDefinition Width="5"/>
+                        <ColumnDefinition Width="*"/>
+                    </Grid.ColumnDefinitions>
+                    <HorizontalStackLayout Spacing="10"
+                                           Grid.Column="0">
+                        <Image Source="plus.png"/>
+                        <Label Text="Add new contact"/>
+                    </HorizontalStackLayout>
+                    <!--<VerticalStackLayout IsVisible=""
+                                         Grid.Column="2">
+                        <Grid FlowDirection="LeftToRight">
+                            <Label Text="Prénom :" />
+                            <Entry Placeholder="Saisissez le prénom"/>
+
+                            <Label Text="Nom :"/>
+                            <Entry Placeholder="Saisissez le nom"/>
+
+                            <Button Text="Enregistrer"
+                                    Command="{Binding ContactsVM.Navigator.AddContactCommand}"/>
+                        </Grid>
+                    </VerticalStackLayout>
+                    <Grid.GestureRecognizers>
+                        <TapGestureRecognizer Command="{Binding ContactsVM.}"/>
+                    </Grid.GestureRecognizers>-->
+                </Grid>
                 <CollectionView ItemsSource="{Binding ContactsVM.Manager.AllContacts}"
                                 SelectedItem="{Binding ContactsVM.Manager.SelectedContact}"
                                 SelectionChangedCommand="{Binding ContactsVM.Manager.LendBookCommand}"
                                 SelectionChangedCommandParameter="{Binding ContactsVM.Manager.SelectedContact}"
                                 SelectionMode="Single"
-                                Grid.Row="2">
+                                Grid.Row="4">
                     <CollectionView.ItemTemplate>
                         <DataTemplate x:DataType="viewModel:ContactVM">
                             <VerticalStackLayout>
diff --git a/LivreLand/ViewModel/EmpruntsPretsVM.cs b/LivreLand/ViewModel/EmpruntsPretsVM.cs
index 3ddff54..3ec03a0 100644
--- a/LivreLand/ViewModel/EmpruntsPretsVM.cs
+++ b/LivreLand/ViewModel/EmpruntsPretsVM.cs
@@ -30,38 +30,80 @@ namespace LivreLand.ViewModel
 
         public Color PretButtonBackgroundColor
         {
-            get => pretButtonBackgroundColor;
-            set => pretButtonBackgroundColor = value;
+            get { return pretButtonBackgroundColor; }
+            set
+            {
+                if (pretButtonBackgroundColor != value)
+                {
+                    pretButtonBackgroundColor = value;
+                    OnPropertyChanged(nameof(PretButtonBackgroundColor));
+                }
+            }
         }
 
         public bool PretButtonIsEnabled
         {
-            get => pretButtonIsEnabled;
-            set => pretButtonIsEnabled = value;
+            get { return pretButtonIsEnabled; }
+            set
+            {
+                if (pretButtonIsEnabled != value)
+                {
+                    pretButtonIsEnabled = value;
+                    OnPropertyChanged(nameof(PretButtonIsEnabled));
+                }
+            }
         }
 
         public Color EmpruntButtonBackgroundColor
         {
-            get => empruntButtonBackgroundColor;
-            set => empruntButtonBackgroundColor = value;
+            get { return empruntButtonBackgroundColor; }
+            set
+            {
+                if (empruntButtonBackgroundColor != value)
+                {
+                    empruntButtonBackgroundColor = value;
+                    OnPropertyChanged(nameof(EmpruntButtonBackgroundColor));
+                }
+            }
         }
 
         public bool EmpruntButtonIsEnabled
         {
-            get => empruntButtonIsEnabled;
-            set => empruntButtonIsEnabled = value;
+            get { return empruntButtonIsEnabled; }
+            set
+            {
+                if (empruntButtonIsEnabled != value)
+                {
+                    empruntButtonIsEnabled = value;
+                    OnPropertyChanged(nameof(EmpruntButtonIsEnabled));
+                }
+            }
         }
 
         public bool EmpruntCollectionIsVisible
         {
-            get => empruntCollectionIsVisible;
-            set => empruntCollectionIsVisible = value;
+            get { return empruntCollectionIsVisible; }
+            set
+            {
+                if (empruntCollectionIsVisible != value)
+                {
+                    empruntCollectionIsVisible = value;
+                    OnPropertyChanged(nameof(EmpruntCollectionIsVisible));
+                }
+            }
         }
 
         public bool PretCollectionIsVisible
         {
-            get => pretCollectionIsVisible;
-            set => pretCollectionIsVisible = value;
+            get { return pretCollectionIsVisible; }
+            set
+            {
+                if (pretCollectionIsVisible != value)
+                {
+                    pretCollectionIsVisible = value;
+                    OnPropertyChanged(nameof(PretCollectionIsVisible));
+                }
+            }
         }
 
         public ICommand PretsButtonCommand { get; private set; }
@@ -88,40 +130,40 @@ namespace LivreLand.ViewModel
         {
             if (App.Current.PlatformAppTheme == AppTheme.Light)
             {
-                pretButtonBackgroundColor = Colors.Transparent;
-                pretButtonIsEnabled = false;
-                empruntButtonBackgroundColor = Colors.White;
-                empruntButtonIsEnabled = true;
+                PretButtonBackgroundColor = Colors.Transparent;
+                PretButtonIsEnabled = false;
+                EmpruntButtonBackgroundColor = Colors.White;
+                EmpruntButtonIsEnabled = true;
             }
             else
             {
-                pretButtonBackgroundColor = Colors.Transparent;
-                pretButtonIsEnabled = false;
-                empruntButtonBackgroundColor = Colors.Black;
-                empruntButtonIsEnabled = true;
+                PretButtonBackgroundColor = Colors.Transparent;
+                PretButtonIsEnabled = false;
+                EmpruntButtonBackgroundColor = Colors.Black;
+                EmpruntButtonIsEnabled = true;
             }
-            pretCollectionIsVisible = false;
-            empruntCollectionIsVisible = true;
+            PretCollectionIsVisible = false;
+            EmpruntCollectionIsVisible = true;
         }
 
         public void EmpruntsButtonClicked()
         {
             if (App.Current.PlatformAppTheme == AppTheme.Light)
             {
-                pretButtonBackgroundColor = Colors.White;
-                pretButtonIsEnabled = true;
-                empruntButtonBackgroundColor = Colors.Transparent;
-                empruntButtonIsEnabled = false;
+                PretButtonBackgroundColor = Colors.White;
+                PretButtonIsEnabled = true;
+                EmpruntButtonBackgroundColor = Colors.Transparent;
+                EmpruntButtonIsEnabled = false;
             }
             else
             {
-                pretButtonBackgroundColor = Colors.Black;
-                pretButtonIsEnabled = true;
-                empruntButtonBackgroundColor = Colors.Transparent;
-                empruntButtonIsEnabled = false;
+                PretButtonBackgroundColor = Colors.Black;
+                PretButtonIsEnabled = true;
+                EmpruntButtonBackgroundColor = Colors.Transparent;
+                EmpruntButtonIsEnabled = false;
             }
-            pretCollectionIsVisible = true;
-            empruntCollectionIsVisible = false;
+            PretCollectionIsVisible = true;
+            EmpruntCollectionIsVisible = false;
         }
 
         #endregion