MainWindow.axaml

<Window xmlns="https://github.com/avaloniaui"
        xmlns:rxui="clr-namespace:Avalonia.ReactiveUI;assembly=Avalonia.ReactiveUI"

        xmlns:app="clr-namespace:CookinGest"

        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"
        x:Class="CookinGest.MainWindow"
        Title="CookinGest"

        xmlns:views="clr-namespace:CookinGest.Views"

        TransparencyLevelHint="AcrylicBlur"
        Background="Transparent"


        WindowStartupLocation="CenterScreen"
>
    <Panel>
        <Panel>
               <ExperimentalAcrylicBorder IsHitTestVisible="False">
                   <ExperimentalAcrylicBorder.Material>
                       <ExperimentalAcrylicMaterial
                           BackgroundSource="Digger"
                           TintColor="Black"
                           TintOpacity="1"
                           MaterialOpacity="0.65" />
                   </ExperimentalAcrylicBorder.Material>
               </ExperimentalAcrylicBorder>
        </Panel>

        <Panel>
            <Grid>
                <Grid.RowDefinitions>
                    <RowDefinition Height="*" />
                    <RowDefinition Height="Auto" />
                </Grid.RowDefinitions>
                <rxui:RoutedViewHost Router="{Binding Router}">
                    <rxui:RoutedViewHost.DefaultContent>
                        <TextBlock Text="Default content"
                                   HorizontalAlignment="Center"
                                   VerticalAlignment="Center" />
                    </rxui:RoutedViewHost.DefaultContent>
                    <rxui:RoutedViewHost.ViewLocator>
                        <!-- See AppViewLocator.cs section below -->
                        <app:AppViewLocator />
                    </rxui:RoutedViewHost.ViewLocator>
                </rxui:RoutedViewHost>
            </Grid>
        </Panel>
    </Panel>


    
</Window>