A **header** is a whole container of introductory content, such as site logo, navigation, and search field. A **heading** is the title of a section of a document — headings create the document outline. In HTML, **headers** are represented by [the `` element](https://www.w3.org/TR/html52/sections.html#the-header-element) and level **headings** are represented by [`

`–`

`](https://www.w3.org/TR/html52/sections.html#the-h1-h2-h3-h4-h5-and-h6-elements).

It looks like this repo refers to the latter. It might be helpful to reinforce established terminology and use "heading" instead of "header".

see: https://www.google.com/search?q=header+vs+heading