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Landing animation wrong direction on page load

Hello guys !
I have an issue with one of my animation on scroll into view. On my Designer, the animation works as expected. The beige div, moves from top to bottom fluently and clearly, but when i preview my website, the beige div has a diagonal move when it appears. I really don’t know where this error could come from, that type of animation is used on all titles on my site and i don’t have this problem anywhere else. In addition, the same entrance animation is used for the “Skills” & “Softwares” blocs, and in those cases, the animation is as i want it to be.
Do you know what can cause this issue ?

Here is my public share link:

Thanks a lot for your help !