Sample usage: view-source of https://jeffhuang.com/best_paper_awards/
To get input from a user in a html web page - use the “HTML forms”.
Tutorial:- http://www.w3schools.com/html/html_forms.asp
HTML WYSIWYG editors in Debian
tinymce, https://packages.debian.org/search?keywords=ckeditor ckeditor
reviews on html editors