Android List Shadow effect when during scrolling rich the top/bottom of the list.
Css Inspired By: By Lea Verou's presentation from: "More CSS Secrets: Another 10 things you may not know about CSS" at the W3Conf 2013 .
Idea Inspired By: Google Android .
Android effect when during scrolling you rich the top/bottom of the list, and at that momment you see blue light at the top/bottom respectively.