insert fluid image

[marco tomasco]

Greetings,
I would like to insert the map created on a photo of my site but I can't understand how to connect the code to the image itself.
then it would be useful for me to understand if the photo adapts to the resolution, do the coordinates remain proportional and relative to the new dimensions?
thanks for any help

[Adam Maschek]

Please see https://www.w3schools.com/html/html_images_imagemap.asp

and 
https://stackoverflow.com/questions/7844399/responsive-image-map