textual/docs/widgets/header.md

Header

A simple header widget which docks itself to the top of the parent container.

!!! note

The application title which is shown in the header is taken from the [`title`][textual.app.App.title] and [`sub_title`][textual.app.App.sub_title] of the application.

• Focusable
• Container

Example

The example below shows an app with a Header.

=== "Output"

```{.textual path="docs/examples/widgets/header.py"}
```

=== "header.py"

```python
--8<-- "docs/examples/widgets/header.py"
```

This example shows how to set the text in the Header using App.title and App.sub_title:

=== "Output"

```{.textual path="docs/examples/widgets/header_app_title.py"}
```

=== "header_app_title.py"

```python
--8<-- "docs/examples/widgets/header_app_title.py"
```

Reactive Attributes

Name	Type	Default	Description
tall	bool	True	Whether the Header widget is displayed as tall or not. The tall variant is 3 cells tall by default. The non-tall variant is a single cell tall. This can be toggled by clicking on the header.

Messages

This widget sends no messages.

---

::: textual.widgets.Header options: heading_level: 2