Headers and footers operate independently of each other and have the same control features.
Headers and footers can contain graphics. When loaded into a header or footer, graphics are essentially on a "locked layer" and do not interfer with other objects on the page.
Changing a header/footer in Word starts with setting the page layout to have a "different first page."
Different first page means the header and footer of the first page of a new section can have contents different from the other pages in the section.
A new section is created in the Page Layout tab of the Ribbon, by choosing Section break, next page.
Additional control is provided by the "Same as previous" setting. By default, each header/footer is the same as the header/footer in the previous section. We can toggle "Same as previous" off to break that connection and start a new header or footer.
When the Header/footer is opened, Same as previous is a label that appears at the right edge. Labels at the left indicate if this is a First page header, or just a section page header, and gives the section number.
The attached PowerPoint shows page layout diagrams for different conditions of the Header/Footer areas and the effect on the header/footer labeling.
1. Default condition, all headers and footers in the document are the same (no Different first page).
2. Different first page is set, no section breaks added to the document.
3. Different first page is set, and section breaks are added.
4. Different first page is set and sections have Same as previous turned off.
Using these controls it is possible to change colors and fonts in headers and footers throughout the document.