http://www.designresourcebox.com/how-the-web-design-trend-of-parallax-scrolling-has-faded/

There was a time, not so long ago when a majority of new sites that we were seeing in website showcase galleries were parallax. It was really interesting at first, but like almost any trend, it gets bigger like a bubble and eventually it pops and the trend fades away. This situation happened to parallax scrolling too. It was a big thing and people were insane about it, but… it faded.