NebulaLauncher/Nebula.Launcher/Views/Popup/EditServerNameView.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:popup="clr-namespace:Nebula.Launcher.ViewModels.Popup"
             xmlns:customControls="clr-namespace:Nebula.Launcher.Controls"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="Nebula.Launcher.Views.Popup.EditServerNameView"
             x:DataType="popup:EditServerNameViewModel">
    <Design.DataContext>
        <popup:EditServerNameViewModel />
    </Design.DataContext>
    
    <StackPanel Margin="15" Spacing="10">
        <Border BoxShadow="{StaticResource DefaultShadow}">
            <TextBlock  Text="{Binding IpInput}"  Margin="10,8,10,8"/>
        </Border>
        <Border BoxShadow="{StaticResource DefaultShadow}">
            <TextBox Text="{Binding NameInput}" Watermark="custom server name" />
        </Border>
        <Border Background="{StaticResource DefaultSelected}" BoxShadow="{StaticResource DefaultShadow}">
            <Button Command="{Binding OnEnter}" HorizontalAlignment="Stretch">
                <customControls:LocalizedLabel HorizontalAlignment="Center" LocalId="servername-set"/> 
            </Button>
        </Border>
    </StackPanel>
</UserControl>