Image Hotspots

In developing an "image hotspot", the background image is huge. How could we reduce the size of the background image .

I have interactive book with image hotspots as page content. I have custom hp5 css file which I use to modify css and it works as expected. I want to use font-awesome in css but the characters are not showing, instead there is a blue placeholder type graphic.This works in the rest of the WordPress website.

Hello - the Interactive book content type isn't currently supporting version 1.9 of the Image Hotspot content. It appears to be using version 1.8 which has a bug on hotspot triggers jumping around on hover.