Styling issue when site published

Design help Layout & Design
1

Hi guys,

I recently bought the beautiful “Byra” template from Udesly.

But I’ve a styling problem when I publish my site :

In preview mode, its OK but when I publish the project… the section is not fixed to the viewport…
Theres some screenshots of my problem

My project : https://preview.webflow.com/preview/rivia-finish-him-website?utm_medium=preview_link&utm_source=designer&utm_content=rivia-finish-him-website&preview=ece5af48a1a3891c368d2b121b9a4a4f&workflow=preview

preview1
preview11821×792 98.3 KB

preview2
preview21918×864 141 KB

preview3
preview31892×812 105 KB

published1
published11886×806 156 KB

published2
published21894×865 155 KB

Do you now how to fix it ?

Thanks a lot !