AGENTS.md , ACCESSIBILITY.md but also A11Y.md , DESIGN.md —as well as taste.md . Following this trend of specialized specification files, here is a draft for HTML.md ( gist )—foundational instructions you need for writing HTML, geared towards both humans and machines (if only to improve parsing and save tokens). * Use the elements most appropriate semantically. * Use as little HTML as possible. * Validate all HTML output against an HTML validator (preferably the W3C one), and fix any errors. Enter fullscreen mode Exit fullscreen mode That’s it. Is this a joke? No: While these instructions are opinionated insofar as they reflect a school of minimal web development honoring the first rule of ARIA and suggesting no use of optional markup , they acknowledge the reality that the HTML code on most websites often isn’t using the right elements for the job (e.g., divitis ) and that it’s essentially never error-free (i.e., commonly invalid) .…