Index: Core/Common/src/Core.Common.Gui/Forms/MainWindow/MainWindow.xaml
===================================================================
diff -u -r982679dfc9f7442bd5f21755ad8c57a0c528cc07 -r824bc2f71241ceb90d7bd1cd0e73b8581bd3eac5
--- Core/Common/src/Core.Common.Gui/Forms/MainWindow/MainWindow.xaml	(.../MainWindow.xaml)	(revision 982679dfc9f7442bd5f21755ad8c57a0c528cc07)
+++ Core/Common/src/Core.Common.Gui/Forms/MainWindow/MainWindow.xaml	(.../MainWindow.xaml)	(revision 824bc2f71241ceb90d7bd1cd0e73b8581bd3eac5)
@@ -1,4 +1,4 @@
-<!--
+<!--
 Copyright (C) Stichting Deltares 2021. All rights reserved.
 
 This file is part of Riskeer.
@@ -74,6 +74,8 @@
             </Style>
             
             <SolidColorBrush x:Key="BorderBrush" Color="{StaticResource Transparent}" />
+            <SolidColorBrush x:Key="MainButtonBarBottomBorderBrush" Color="{StaticResource DeltaresSand}" />
+            <SolidColorBrush x:Key="MainButtonBarActiveBackgroundColor" Color="#F1F1EE" />
             
             <Style x:Key="TopAndBottomBarButtonStyle" TargetType="{x:Type ButtonBase}">
                 <Setter Property="Background" Value="{StaticResource WindowTitleColorBrush}" />
@@ -136,6 +138,12 @@
     <Grid Background="{StaticResource BackgroundColorBrush}">
         <DockPanel>
             
+            <StackPanel DockPanel.Dock="Top" Height="100" Background="{StaticResource MainButtonBarActiveBackgroundColor}"/>
+            
+            <Border DockPanel.Dock="Top"
+                    BorderThickness="0,1,0,0"
+                    BorderBrush="{StaticResource MainButtonBarBottomBorderBrush}" />
+            
             <DockPanel Height="25" DockPanel.Dock="Bottom" Style="{StaticResource PanelBackgroundWindowTitleStyle}">
                 <StackPanel Orientation="Horizontal" DockPanel.Dock="Left">
                     <ToggleButton Name="ButtonShowProperties"