Bitrix site does not see media queries below 990 px?

Question

1C-Bitrix

I don’t understand what’s the joke, I write copper requests on the site on Bitrix, above 990px ​​everything works fine, below it doesn’t see at all that it doesn’t exist at all, although if I poke at the style file in the browser in the file, my media request is there, I tried to disable scripts, maybe from for them, the same garbage