Why is the site not displaying correctly in the Chrome mobile emulator?

Question

css

Good afternoon.
When viewing the site from a mobile device, the site displays correctly, but when viewed on a mobile device emulator, the site displays like this
Why? Thank you!

Answer 1

well, open the phone's resolution in chrome and click refresh the page
, everything will be correct
, and when asked why, I will answer without looking, most likely the change in the width and height of the screen through JS is not checked