Making websites responsive, is it really difficult?

Question

Its been a while i always find responsive webdesign difficult.If i want to make a webpage responsive with the help of CSS only what are the topics which i need to focus on and what should be the approach?If you have any article,video related to this please share it below. . .

Answer 1

There is a whole course about it on sololearn

https://www.sololearn.com/Course/Responsive-Web-Design/?ref=app

Main things:
Hover, animation (keyframes), filter, transition, transform, alignments and all, use of vw and vh etc

Answer 2

Thanks Namit Jain [INACTIVE]