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Main.xaml

<Grid 
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

  <Grid x:Name="MenuOptions" Grid.Row="1" Width="640" Margin="0,30,0,0" HorizontalAlignment="Left" VerticalAlignment="Top" Height="300">
        <StackPanel KeyboardNavigation.DirectionalNavigation="Contained" KeyboardNavigation.TabNavigation="Contained">
            <Rectangle Height="2" Margin="0,0,0,2" Fill="Silver"/>
            <ToggleButton x:Name="Casual" Content="CASUAL" Command="{Binding StartCasual}"/>
            <ToggleButton x:Name="Normal" Content="NORMAL" Command="{Binding StartNormal}"/>
            <ToggleButton x:Name="Expert" Content="EXPERT" Command="{Binding StartExpert}"/>
        </StackPanel>
        <ToggleButton VerticalAlignment="Bottom" Content="reee" Command="{Binding StartCasual}" Height="48"/>
    </Grid>
</Grid>