What Exactly is CSS & JS. Are the some kind of supplement language for HTML?

Question

Can someone please explain me the role they play with HTML.

Answer 1

They are technologies that are complemented with html to perform certain tasks:

css: they give styles to the html structure.
Javascript: allows to develop dynamic web pages thanks to the use of events, dom manipulation, etc.

Check this lesson about Css:
https://www.sololearn.com/learn/CSS/1078/

Check this lesson about JS:
https://www.sololearn.com/learn/JavaScript/1123/

Answer 2

Exactly Ayaan

Answer 3

JECKA1997 so basically i need to learn JS & CSS too?

Answer 4

HTML is the structure, CSS is the design & JavaScript is the behavior.