LanMountainDesktop/LanMontainDesktop/Views/Components/BrowserWidget.axaml

<UserControl 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"
             xmlns:fi="using:FluentIcons.Avalonia"
             xmlns:webview="clr-namespace:AvaloniaWebView;assembly=Avalonia.WebView"
             mc:Ignorable="d"
             d:DesignWidth="480"
             d:DesignHeight="480"
             x:Class="LanMontainDesktop.Views.Components.BrowserWidget">

    <Border x:Name="RootBorder"
            Background="#F4F7FC"
            CornerRadius="24"
            ClipToBounds="True"
            Padding="10">
        <Grid RowDefinitions="*,Auto"
              RowSpacing="8">
            <Border x:Name="WebViewHostBorder"
                    Grid.Row="0"
                    CornerRadius="16"
                    ClipToBounds="True"
                    Background="#FFFFFFFF"
                    BorderBrush="#22000000"
                    BorderThickness="1">
                <webview:WebView x:Name="BrowserWebView" />
            </Border>

            <Border x:Name="AddressBarBorder"
                    Grid.Row="1"
                    CornerRadius="14"
                    Background="#ECF2FA"
                    BorderBrush="#22000000"
                    BorderThickness="1"
                    Padding="8,6">
                <Grid ColumnDefinitions="Auto,*,Auto"
                      ColumnSpacing="8">
                    <Button x:Name="RefreshButton"
                            Grid.Column="0"
                            Width="34"
                            Height="34"
                            Padding="0"
                            CornerRadius="17"
                            ToolTip.Tip="Refresh"
                            Click="OnRefreshButtonClick">
                        <fi:SymbolIcon Symbol="ArrowClockwise"
                                       FontSize="15" />
                    </Button>

                    <TextBox x:Name="AddressTextBox"
                             Grid.Column="1"
                             VerticalContentAlignment="Center"
                             HorizontalContentAlignment="Left"
                             Watermark="https://example.com"
                             Text="https://www.bing.com"
                             KeyDown="OnAddressTextBoxKeyDown" />

                    <Button x:Name="GoButton"
                            Grid.Column="2"
                            Width="34"
                            Height="34"
                            Padding="0"
                            CornerRadius="17"
                            ToolTip.Tip="Go"
                            Click="OnGoButtonClick">
                        <fi:SymbolIcon Symbol="ArrowRight"
                                       FontSize="15" />
                    </Button>
                </Grid>
            </Border>
        </Grid>
    </Border>
</UserControl>