PUBLIC MARKS with tags standards & "aides techniques"

According to a screenreader survey, 76% of screenreader users use headings to navigate either ‘often’ or ‘all the time’. With that statistic we can’t argue how important headings are especially for people with disabilities.

when you design dynamic content, write an accordeon widget or the like, please please please always take the time to chose an appropriate div element in the vicinity of where the user is, and add or remove the dynamic content there instead of taking the maybe easier, but far less intuitive, route to simply dump to the end of the document node’s children and then use some weird styling to craft it visually