How can i achieve this kind of animation effect (see link below) and where do I need to start learning, is this part of css or html5 or plugins, etc..
I have a startup knowledge in css and html5, but I have no idea how to achieve the effect.
http://www.terredevenements.com/en/
*the effect i'm referring to is the movement of the foreground images while the mouse hovers and still maintaining its background to be static