random problem on some pages.

Hello,

I have a random problem with the menu at the bottom of the page. When I browse the website, after a while, I arrive on a page with this type of broken menu. Do you have any idea what could be causing this problem?

I give you a link with screenshots.

Thanks for your help,

https://www.docteur-fitness.com/lipide

https://ibb.co/N6Fx2JK
https://ibb.co/yPDY5LJ

The page I need help with: [log in to see the link]