How to auto Scale my webpage on different screen size? Like facebook

Question

Is there is any tag in HTML, CSS CSS, JS to auto detect the device and apply a different style sheet for my page

Answer 1

yeah, there is. It’s called _Responsive website_

I can’t explain it all, but you can check it out here:
https://www.w3schools.com/css/css3_mediaqueries_ex.asp

Also, video example:
https://youtu.be/ZYV6dYtz4HA

Answer 2

Yes it is responsive design. Indeed, check out bootstrap which makes easier to apply this to your webpage. Bootstrap as I understand is a library.