How to create a simple parallax effect

All over the web, sites are springing up, that use what is known as a parallax scroll. In essence, a parallax scroll is when content scrolls at different speeds, creating a sense of perspective and therefore depth. It’s an appealing effect, and can be applied to as many layers as you like. In this article I’m going to introduce the basic principles by showing you how to build a simple two layer parallax effect.