Shell.xaml

<Window x:Class="WireFrame.Shell.Shell"
        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:WireFrame.Shell"
        mc:Ignorable="d"
        Title="Shell" Height="450" Width="600">
    <Window.Resources>
        <Thickness x:Key="BtnMargin">5,5,5,0</Thickness>
    </Window.Resources>
    <DockPanel LastChildFill="True">
        <StackPanel DockPanel.Dock="Left" Width="150">
            <Button Content="Navigation 1" Margin="{DynamicResource BtnMargin}" />
            <Button Content="Navigation 2" Margin="{DynamicResource BtnMargin}" />
            <Button Content="Navigation 3" Margin="{DynamicResource BtnMargin}" IsEnabled="False"/>
            <Button Content="Navigation 4" Margin="{DynamicResource BtnMargin}" IsEnabled="False"/>
        </StackPanel>
        <Border BorderBrush="Blue" BorderThickness="1">
            <TextBlock FontSize="40" FontWeight="Bold" Text="MAIN REGION" VerticalAlignment="Center" HorizontalAlignment="Center" />
        </Border>
    </DockPanel>
</Window>