A header or footer can contain text, information about the document, or even images. However, the most common elements in a header or footer are page numbers. Page numbers can be continuous though a document, all but the first page, or start over in each section.
Note: The best way to work with page numbers is in Word on a laptop or desktop computer, rather than in a web browser or mobile app.
![Insert page number](https://support.content.office.net/en-us/media/0c73715b-857e-407f-aaa8-2e18c9296690.png)