Responsive Proportional Relationship

Hi, is there a way to make the ratio of width:height different values at different breakpoints? Say 190:89 at 1900px to 751px and 1:1 at below 750px?

Here is the link, if you need it
https://184.154.228.5/~homedel8/akustus/

Thank you very much
Kevin He

https://www.ads-software.com/plugins/slideshow-jquery-image-gallery/