Add HTML/CSS/JavaScript content (#1993)

* Update html-css-javascript.md

* Update content/roadmaps/113-qa/content/103-qa-automated-testing/100-frontend-automation/100-basic-introduction/html-css-javascript.md

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

content/roadmaps/113-qa/content/103-qa-automated-testing/100-frontend-automation/100-basic-introduction/html-css-javascript.md

@@ -1 +1,12 @@
-# Html css javascript
+# HTML/CSS/JavaScript Basics
+
+HTML stands for HyperText Markup Language. It is used on the front and gives structure to the webpage, which you can style using CSS and make interactive using JavaScript.
+
+CSS or Cascading Style Sheets is the language used to style the front end of any website. CSS is a cornerstone technology of the World Wide Web, alongside HTML and JavaScript.
+
+JavaScript allows you to add interactivity to your pages. You may have seen common examples on the websites: sliders, click interactions, popups, and so on.
+
+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+<BadgeLink badgeText='Read' colorScheme='yellow' href='https://www.w3schools.com/html/html_intro.asp'>W3Schools: Learn HTML</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.w3schools.com/css/'>W3Schools — Learn CSS</BadgeLink>
+<BadgeLink badgeText='Read' colorScheme="yellow" href='https://www.w3schools.com/js/'>W3Schools – JavaScript Tutorial</BadgeLink>