How to make element responsive

Can someone tell me how to make elements (pic, div etc.) responsive on big screen size?
I want to make my banner responsive on big screen size like this:

Thank you

Here is my site Read-Only: [LINK][1]

Live Site :

Hope that will solve your request.

Thank you so much. It’s a little bit different from what I want it to be. But, I am satisfied with this rn