ADD : work on SearchBar Visual

LivreLand/View/ContentViews/SearchBarView.xaml

@@ -4,7 +4,21 @@
              x:Class="LivreLand.View.ContentViews.SearchBarView">
 
     <Grid>
-        <SearchBar/> 
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="10"/>
+            <ColumnDefinition Width="300"/>
+            <ColumnDefinition Width="*"/>
+        </Grid.ColumnDefinitions>
+        <Frame CornerRadius="10"
+               BorderColor="Transparent"
+               BackgroundColor="{DynamicResource Gray}"
+               HeightRequest="40"
+               Grid.Column="1">
+            <SearchBar WidthRequest="200"
+                       HeightRequest="50"
+                       HorizontalOptions="Start"/>   
+        </Frame>
+         
     </Grid>
     
 </ContentView>

LivreLand/View/FiltrageAuteurView.xaml

@@ -23,6 +23,7 @@
                          HeaderSwitchButtonVisible="True"/>
 
         <VerticalStackLayout BackgroundColor="{DynamicResource Light}"
+                             Spacing="10"
                              Grid.Row="2">
             <contentView:SeparatorEntireView/>
 

LivreLand/View/FiltrageDateView.xaml

@@ -22,6 +22,7 @@
                          Grid.Row="0"/>
 
         <VerticalStackLayout BackgroundColor="{DynamicResource Light}"
+                             Spacing="10"
                              Grid.Row="2">
             <contentView:SeparatorEntireView/>
 

LivreLand/View/FiltrageNoteView.xaml

@@ -23,6 +23,7 @@
                          HeaderSwitchButtonVisible="True"/>
 
         <VerticalStackLayout BackgroundColor="{DynamicResource Light}"
+                             Spacing="10"
                              Grid.Row="2">
             <contentView:SeparatorEntireView/>
 

LivreLand/View/HeaderPage.xaml

@@ -5,10 +5,10 @@
              x:Class="LivreLand.View.HeaderPage"
              x:Name="this"
              BindingContext="{x:Reference this}"
-             BackgroundColor="{Binding HeaderColor}">
+             BackgroundColor="{AppThemeBinding Light={Binding HeaderColor}, Dark={StaticResource HeaderGray}}">
     
     <Grid Margin="5">
-        <Grid>
+        <Grid>  
             <Grid.ColumnDefinitions>
                 <ColumnDefinition Width="auto"/>
                 <ColumnDefinition Width="*"/>