Responsive NFT card using CSS with his unique capabilities for styling

Hello everyone ,this was my 3th project here !Thank you so much ,FrontEnd Mentors !It's worth every second to practise the things ,which you have learned and turn them into something real .

I am not very familiar how the project could be responsive for mobile and desktop devices . If I need to improve something in my code to turn the project into a fully responsive mode , I would be very grateful to receive an advice .

Thank you !