docs

docs/examples/styles/height.py

@@ -0,0 +1,18 @@
+from textual.app import App
+from textual.widget import Widget
+
+
+class WidthApp(App):
+    CSS = """    
+    Screen > Widget {     
+        background: green;
+        height: 50%;
+        color: white;
+    }
+    """
+
+    def compose(self):
+        yield Widget()
+
+
+app = WidthApp()