depth first search

sandbox/will/screens_focus.css

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+ Focusable {
+     padding: 3 6;
+     background: blue 20%;
+ }
+
+ Focusable :focus {
+     border: solid red;
+ }
+

sandbox/will/screens_focus.py

@@ -0,0 +1,20 @@
+from textual.app import App, ComposeResult
+from textual.widgets import Static, Footer
+
+
+class Focusable(Static, can_focus=True):
+    pass
+
+
+class ScreensFocusApp(App):
+    def compose(self) -> ComposeResult:
+        yield Focusable("App - one")
+        yield Focusable("App - two")
+        yield Focusable("App - three")
+        yield Focusable("App - four")
+        yield Footer()
+
+
+app = ScreensFocusApp(css_path="screens_focus.css")
+if __name__ == "__main__":
+    app.run()