Thank you, @mvaneijgen!
I've got it to work in a simple HTML layout, as I want it to be. However, when I try to apply it to a more complex website layout, with more div's and sections, the desired outcome is not there.
Here is the simple working example, like I want it to be:
https://codepen.io/gjcod/pen/YzLWVWN
Here is the example with the more complex layout, which isn't working for me now: https://codepen.io/gjcod/pen/qBYNmRZ
I just copied the HTML part from the website. It is pretty basic - it has a section with the id "container", and inside it, 3 other sections. The section I want to animate has the class "fadein-circle".
I'm stuck at this moment, I think the layout is not working because of some faulty CSS, but I can't seem to find it. Any help is highly appreciated, as I am bugging at this for hours.
Thank you!