highminded/ui/controls/ChatUserControl.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:vm="using:highminded.models"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="highminded.ui.controls.ChatUserControl"
             x:DataType="vm:ChatViewModel">

    <Grid RowDefinitions="*,Auto" Margin="15" RowSpacing="10">
        <HtmlPanel Grid.Row="0" BaseStylesheet="* { font: Inter; color: white; }"
                   IsContextMenuEnabled="False" IsSelectionEnabled="False" Text="{Binding Content}" />
        <TextBox Grid.Row="1" CornerRadius="5" TextWrapping="Wrap"
                 Watermark="{Binding PromptWatermark}"
                 KeyDown="PromptBox_OnKeyDown" Text="{Binding Prompt}" />
    </Grid>

</UserControl>