How to bind objects to a responsive image? For example: I have a 2500x3000px map, with islands on it. There is a sprite man with a team number 50x50px. The map is drawn to the screen resolution by a simple img-responsive bootstrap class. How to tie a sprite man to a point on the map if the size of the map can vary from the screen resolution? What technology stack is better to use? Now all js, maybe there are some libraries?