Menu/responsive button issue?

Question

css

Tell me what the problem is, it's just a layout for layout from a video course.
The fact is that on a computer in Google Chrome, when allowing mob. Phone (320x568) button looks fine, that one works too.
And when I tested on the phone, the button looks like in the picture. What should be done?
t9977053.beget.tech - site
materials - https://drive.google.com/open?id=10S6LPnSznymlr-Z-...

Answer 1

I agree with commentators about caching. I myself use the gallp environment with browser-sync in my work. It is very convenient to watch the layout on several devices at once, plus - there are no problems with clearing the cache.
Or trick browsers manually by simply substituting different versions in the get parameter for styles.