MainWindow.xaml

<Window x:Class="ScriptVsNewWindow.MainWindow"
        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:local="clr-namespace:ScriptVsNewWindow"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:wv2="clr-namespace:Microsoft.Web.WebView2.Wpf;assembly=Microsoft.Web.WebView2.Wpf"
        x:Name="Root"
        Title="MainWindow"
        Width="800"
        Height="450"
        mc:Ignorable="d">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="0.7*" />
            <RowDefinition Height="0.3*" />
        </Grid.RowDefinitions>
        <StackPanel Orientation="Horizontal">
            <Button x:Name="CopyLog"
                    Margin="4"
                    Padding="8,2"
                    Click="CopyLog_Click">
                Copy Log
            </Button>
            <Button x:Name="ClearLog"
                    Margin="4"
                    Padding="8,2"
                    Click="ClearLog_Click">
                Clear Log
            </Button>
        </StackPanel>
        <DockPanel Margin="4,0" Grid.Row="1">
            <Button Content="Open homepage" Click="OpenDefaultHomepage" />
            <TextBlock Text="Type in an url and press enter to navigate:" />
            <TextBox KeyUp="TextBox_KeyUp" HorizontalAlignment="Stretch" />
        </DockPanel>
        <wv2:WebView2 x:Name="WebView" Grid.Row="2" />
        <Border Grid.Row="3"
                Margin="2"
                HorizontalAlignment="Stretch"
                VerticalAlignment="Top"
                BorderBrush="Black"
                BorderThickness="0,1,0,0" />
        <ScrollViewer Grid.Row="3" Margin="0,4,0,0">
            <ItemsControl ItemsSource="{Binding ElementName=Root, Path=Log}" />
        </ScrollViewer>
    </Grid>
</Window>