Word documents are a bit dubious for web pages at the best of times, a)
because they work only if the user has Word (way less than a quarter of all
web users), and b) security-conscious people won't download a Word document.
Some corporate networks block them completely.

PDFs are better.

Web pages do not include headers or footers. You would have to copy this
information into the body of the document.

--
Suzanne S. Barnhill
Microsoft MVP (Word)