diff --git a/MainWindow.xaml b/MainWindow.xaml
index 674ba4d..583e3da 100644
--- a/MainWindow.xaml
+++ b/MainWindow.xaml
@@ -8,24 +8,23 @@
         Title="MainWindow" Height="450" Width="800">
         <Grid ShowGridLines="True">
         <Grid.ColumnDefinitions>
-            <ColumnDefinition MinWidth="200"/>
-            <ColumnDefinition Width="auto"/>
-            <ColumnDefinition MinWidth="100"/>
+            <ColumnDefinition Width ="*" MinWidth="200"/>
+            <ColumnDefinition Width ="*" MinWidth="100"/>
         </Grid.ColumnDefinitions>
         <Grid.RowDefinitions>
-            <RowDefinition MinHeight="200"/>
-            <RowDefinition MaxHeight="100"/>
+            <RowDefinition Height="*" MinHeight="200"/>
+            <RowDefinition Height="*" MaxHeight="100"/>
         </Grid.RowDefinitions>
-        <GridSplitter Grid.Column="1"  Grid.Row="0" ShowsPreview="False" Width="3" HorizontalAlignment="Center" VerticalAlignment="Stretch" />
+        <GridSplitter Grid.Column="1"  Grid.Row="0" ShowsPreview="False" Width="3" HorizontalAlignment="Left" VerticalAlignment="Stretch" />
         <GridSplitter Grid.Row="1" Grid.ColumnSpan="3" Height="3" HorizontalAlignment="Stretch" VerticalAlignment="Top" />
         <Grid Grid.Row="0" Grid.Column="2" ShowGridLines="True">
             <Grid.ColumnDefinitions>
-                <ColumnDefinition MinWidth="30"/>
-                <ColumnDefinition Width="100"/>
+                <ColumnDefinition Width="*" MinWidth="30"/>
+                <ColumnDefinition Width="*"/>
             </Grid.ColumnDefinitions>
             <Grid.RowDefinitions>
-                <RowDefinition MinHeight="100"/>
-                <RowDefinition MinHeight="200"/>
+                <RowDefinition Height="*" MinHeight="100"/>
+                <RowDefinition Height="*" MinHeight="200"/>
             </Grid.RowDefinitions>
         </Grid>
     </Grid>