oap_labs/MainWindow.axaml

<Window xmlns="https://github.com/avaloniaui"
        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"
        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
        x:Class="t8_win_app.MainWindow"
		xmlns:local="clr-namespace:AvaloniaFirst"
        Title="t8_win_app">

	<Grid>
		<Grid.ColumnDefinitions>
			<ColumnDefinition/>
			<ColumnDefinition/>
		</Grid.ColumnDefinitions>
		<WrapPanel
			VerticalAlignment="Center"
			HorizontalAlignment="Center"
			>
			<Button
				Width="80"
				Height="160"
				Content="52"
				VerticalContentAlignment="Center"
				HorizontalContentAlignment="Center"
				Background="Green"/>
			<Button
				Width="80"
				Height="160"
				Content="52"
				VerticalContentAlignment="Center"
				HorizontalContentAlignment="Center"
				Background="White"/>
			<Button
				Width="80"
				Height="160"
				Content="52"
				VerticalContentAlignment="Center"
				HorizontalContentAlignment="Center"
				Background="Red"/>
		</WrapPanel>
		<Image
			Grid.Column="1"
			Source="/img/kS9g5Fbi8mU.jpg"/>
	</Grid>
	
</Window>