from textual.app import App from textual.containers import Horizontal from textual.widgets import Placeholder class MinHeightApp(App): def compose(self): yield Horizontal( Placeholder("min-height: 25%", id="p1"), Placeholder("min-height: 75%", id="p2"), Placeholder("min-height: 30", id="p3"), Placeholder("min-height: 40w", id="p4"), ) app = MinHeightApp(css_path="min_height.css")