How to remove horizontal scroll on mobile version?

Question

css

Hello everyone, can anyone tell me what's wrong with the mobile phone and where to look?
IOS
when the user is not logged in, there is no scroll, but as soon as I log in, after that there is a horizontal scroll on any page, I tested it on chrome and safari

and another observation, I log in, go to the main page, there is a scroll, change the zoom with my fingers on the screen, adapt the picture to screen for my phone size, and then everything is fine, the scroll disappears, on all pages on the next reload


I would be grateful for any hint

Answer 1

In head add

<meta name="viewport" content="width=device-width, initial-scale=1">