Fluid engine. Desktop and mobile design pretty different. Mobile design buggy

Hi guys, I'm having some troubles with the rendering in fluid mode.

The design of fluid mode on mobile doesn't appear the same as on desktop. Large spaces are appearing. They shouldn't appear. I initially put my content into the same section but the display on mobile is a nightmare (items are not even properly ordered!). So i decided to create sections.

Desktop browser: brave

Mobile browser: chrome, brave

You try clicking Mobile icon on top right > Then you can adjust layout & reduce space on mobile. This won't affect desktop.

Thanks! Solved. Indeed, that was pretty simple but not obvious from my side.