A Why Question for Certification Project 3 on the use of <header> elements (I have completed it)

HTML-CSS
1

I have said in title I have fully completed certification project three a while ago, it is the technical documentation one. There is just something I don’t understand. In document header elements are used in a way, I have only ever used h1, h2, … or kind of title elements for. There is also the minor point of being confused by the program having both no head and no body which I am not sure is unique to this program.

2

you need to add those yourself to make the page complete, even if the tests don’t require it.

For the header element, it’s not an alternative to h# elements, see here:

3

Document linked half answers my question but not as much as I like. I tried to avoid being too specific and not spoiling the project and with it breaking the rules. However I will be more so to get the necessary knowledge. I am trying to understand why the header element is used multiple times and followed with p elements, without any h# elements used at all. Is this a technical documentation thing.
Feel to make this post hidden to the others if you want.

4

you can add the h2 inside the header
each header is the intestation for each section, it is a way to structure the code when you have each section that is mostly indipendent by all the others

5

I am not familiar with the word intestation.

6

sorry, my bad, that is not an english word, I was trying to find a synonym for “header”

7

Sorry the delay it getting back to you I have been taking a break from various things. I think I now understand. In this document all paragraphs/sections are in same category/ level none including introduction is the odd one out there is also no heading above the paragraphs. As there is never more than one h1 there is none. However there must be at least header element therefore they are multiple. The header tag has distinct differences to the header of a word document despite the name it is a tag to put the highest level heading in or crucially highest level headings on the page in regardless on what that means in the document in question.
However a H# can be nested in them. Correct if I am wrong, it is both best practice and useful to do this. I am right in thinking its usefulness come from the ranges of ways to modify the Heading with CSS.