demo_hard/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="demo_hard.MainWindow"
        x:CompileBindings="True"
        Title="demo_hard">
    <DockPanel>
        <StackPanel HorizontalAlignment="Center" Orientation="Horizontal" DockPanel.Dock="Top">
            <TextBlock Text="Точки проката горнолыжного комплекса «Благодать»"/>
        </StackPanel>
        <StackPanel Orientation="Vertical" VerticalAlignment="Center" Margin="5">
            <TextBlock Text="Введите логин" HorizontalAlignment="Center" Margin="5"/>
            <TextBox  x:Name="LoginBox" Margin="5" Width="200"/>
            <TextBlock Text="Введите пароль" HorizontalAlignment="Center" Margin="5"/>
            <TextBox  x:Name="PasswordBox" Margin="5" Width="200" PasswordChar="*"/>
            <TextBlock Text="" x:Name="ErrorBlock" HorizontalAlignment="Center" Margin="5"/>
            <Button x:Name="ForPassword" Content="Показать пароль" Margin="5" Click="TogglePasswordVisibility" HorizontalAlignment="Center"/>
            <Button x:Name="Authorize" Content="Авторизироваться" Margin="5" Click="AuthorizeButton" HorizontalAlignment="Center"/>
        </StackPanel>
        
    </DockPanel>
</Window>