Need help on responsive image ! HTML

Off Topic
1

Hello I needs to make image responsive of this html

Say me a CSS code to make it

https://pastebin.com/cVrpJJMy

2

It appears that this code is just copied and pasted from a WordPress site.

Are you the author/owner of this site?

3

Although im not
Im just testing
Can you say how to make responsive iimage to that code

Css

4

Help please