Saradomin-Launcher/Saradomin/Views/Controls/HeaderedTextBox.axaml

<UserControl xmlns="https://github.com/avaloniaui"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:glitonea="clr-namespace:Glitonea;assembly=Glitonea"
             xmlns:mvvm="clr-namespace:Glitonea.Mvvm;assembly=Glitonea"
             xmlns:vm="clr-namespace:Saradomin.ViewModel.Controls"
             xmlns:controls="clr-namespace:Saradomin.Views.Controls"
             x:Class="Saradomin.Views.Controls.HeaderedTextBox">
    <Grid RowDefinitions="Auto,Auto">
        <TextBlock Grid.Row="0"
                   Foreground="#3E3529"
                   Text="{Binding $parent[controls:HeaderedTextBox].Header}" 
                   Margin="0,0,0,2" />
        
        <TextBox Grid.Row="1"
                 Classes="SettingsTextBox" 
                 Text="{Binding $parent[controls:HeaderedTextBox].Text}" />
    </Grid>
</UserControl>