Thanks @donaldsv , I have one extra question 
Right now, I’ve set it so it looks perfect on Macbook Pro (1440x900), but when I look it on 27’ screen, since the VH is much bigger, the element scroll all the way through and beyond, so there’s probably 1600px of blank space before the ‘section 3’ appears.
Is there a solution to this, so it looks exactly the same on all screen heights? I opened your cloneable project and see the same problem there.
Thanks a ton!