Todays web Technologies parallax scrolling effect used in typical web applications and mobile applications. There are different libraries are available in jquery for animating content .Also we can achieve the same thing using pure Css .lote of related articles are available in code pen site .
In Flutter we are introduce a sample solution to make parallax scrolling effect very easy and simple. This concept is originally created by :https://dribbble.com/shots/8907229-Urban-Planners-Mobile-Animation.
Stian is developed this concept and follow below section for the same implementation of thing in Flutter. Check out the rest of his great designs: https://dribbble.com/Stian