ts-doc is a repository of "Technical Documentation" project in "Responsive Web Design" course of https://freecodecamp.org .
- HTML(HTML5) markup language: https://html.spec.whatwg.org/
- CSS(version 3) cascading stylesheet: https://developer.mozilla.org/en-US/docs/Web/CSS/Reference
- Javascript(ES6): https://javascript.info/
index.pug->docs/index.htmlstyles.scss->docs/styles.css