By default, the page title bar is displayed to respect your site width. You can optionally enable a full-width page title bar to make it occupy 100% width of the browser window. This setting can not only be changed globally but also on a per-page basis if needed. The following procedure shows you how to do that in an easy way.
To make the page title bar full-width globally
- Log into your WordPress site administration panel,
- Navigate to Appearance > Customize, choose Page Title Bar.
- In the Page Title Bar panel, choose General.
- Enable Full Width to set the page titel bar to 100% browser width.
Full-width page title bar on a specific page
- Log into your WordPress site administration panel.
- Navigate to Pages > All Pages, click on the page you want to edit.
- On the editing page, scroll down to theme Page Options panel, choose Page Title Bar.
- In the option box of Fullwidth, choose Yes.