Hi guys, first of all thank you for replying so fast and taking your time to inspect my code. Yes i'm using the code from Petr Tichy as a starting point. I will try to make a simpler version of it. Also @Visual-Q, I already add the active class on the first class I've just forgot to add it into the codepen version.
I put my code in codepen but it don't seem to work and I don't know why. Anyway my problem is when I scroll down to see the next slide the image don't fade to the next one but when I scroll up to see the previous slide it does. Any idea ?? I'm new to the greensock universe so don't be to rough with me. Thanks guys !!!