Display bug on all my responsives pages

[Trevor (Lombiongo Trévor-Yves)]

Hello,

Here’s my problem…
In the editing mode of webflow the display is correct. But when I go to my site with my phone, the background and the page heads are displayed any way.

Can you explain these problems to me ?

My read-only link :
https://preview.webflow.com/preview/collectif-differents-crew?utm_medium=preview_link&utm_source=dashboard&utm_content=collectif-differents-crew&preview=ecd26e76785c859959e973abc1695c59&mode=preview

My website link : collectif-differents-crew.com

Thanks in advance.