Horizontal scrolling on the site, how to remove it?

Question

css

Here is the site www.kangoroom.ru/profpanel
in the inspector everything is fine, there is no scrolling, but when you look from the phone it appears.
I removed the slider on the second screen and everything is fine, but how exactly this slider gives scrolling on the phone I don’t understand

Answer 1

Well, it is obvious that the slider becomes wider than the screen. It is necessary to set the required width through media queries.

Answer 2

I understand that the problem has already been solved, but I have to write this.
overflow: hidden;