title: Vertical scroll div different speed
body: <p>I want to create a page with different layers (different z-index i guess) and each layer has a different speed on scroll. I've been trying to use the parallax effect but it's not exactly what I need because it's base on background-images of div. And those divs are "cutted" by the next div and so on... What I need it's something simpler. </p>
  
  <p>I was thinking in one big div to be a background - in this one some images at different heigh. this will allow to show one image and when i'm scrolling down to see the others.
  2 divs at different level (z-index) with a scroll speed different between them and from the 1st (big) div.</p>
  
  <p>However I'm not achieving it! Am I thinking right? Is this possible?</p>
  
  <p>Thanks,</p>
  
  <p>Regards</p>