image proportions responsive big screen

Hi everyone,

I wonder if there's a way to make the image proportions when "sticking" to one side of the screen responsive to big screens? The images look nice on small screens but get too long and flat on big screens. Is it possible to make them not stick to one side for bigger screens?

Hope you can help!
URL: https://www.inneco.de/12-schritte-zu-deinem-eco-chalet
Password: SunXoQ3 

Anyone, who is facing the same issue?