site for desktop and try to make it responsive without media queries

I would like you to give me all your comments. suggestions and others.

What do you think of the way you apply the selectors and BEM?

It got a bit confusing for me to make it responsive without media queries, applying some properties with min-width in the .card selector as well as using relative measures. In the selector .card-info I would like to know what you think about this height: 65%;

And good is all to say. I await your messages.