Avoid header zoom in smartphone visualization

Hi I’m using Inspiro theme and I’m running issues with the header image.
In particular, the image is cropped on the sides once I switch to smartphone visualization while I’d like that it keeps the same aspect ratio as in the notebook visualization. In other words I want to see the full non-cropped image also on the smartphone visualization, and not just the cropped central part.

Is it possible to do so? How to? I tried to check online but couldn’t find any answer.

Thanks for your help