How to make rellax positions "predictable"?

[gremo]

When relax items are on the very top of the page their position is predictable (https://codepen.io/iosystems/pen/VwrVeOV): the three boxes start in the middle of the container.

On the contrary, when there is content above the container, rellax items positions is unpredictable (https://codepen.io/iosystems/pen/rNYQeQZ): box 1 and 3 are already outside their container.

Question is: is there any way to say "start in the original position, despite the fact that there is content above it"?

[p-realinho]

Hi!
Have you tried the centering option?
You can make all the elements meet their original position when they're crossing the middle of the viewport, or, define a percentage relative to the viewport's height that is where they should meet the original position.
Let me know if that helps.