Can we create responsive website just by using html5 & javascript?And what's the difference between backend and frontend?

Question

web developer

Answer 1

You could create a responsive website using just those two but it look pretty bad without any CSS used to style it.

Front-End (HTML, CSS, Javascript etc.) works on the "client-side" so everything you can see can also be seen be someone else using a difference device (aka client).

Back-End (PHP, NodeJS, Ruby, Python etc.) works on the "server-side", for example data you would enter to login to your bank account, would be sent back to the server(s) and stored there instead of being stored on the user's computer and viewable in a browser.