from textual.app import App from textual.widgets import Placeholder class BasicApp(App): """Demonstrates smooth animation. Press 'b' to see it in action.""" css = """ App > View { layout: dock } #widget1 { edge: top } #widget2 { } """ async def on_mount(self) -> None: """Build layout here.""" await self.view.mount(widget1=Placeholder(), widget2=Placeholder()) SmoothApp.run(log="textual.log")