You can add other widgets to this one to configure the page header as you see fit.
You can also edit the text box widget which is included in the Page header widget.
To configure the widget, drag it to the canvas or click +Widget. Enter the settings in the pop-up window.
The Hide, Read only, HTML styles, On mouse enter handler, On mouse leave handler settings are the system widget settings. Read more about them in this article.
To finish the configuration, click Save and Publish.