Questions about responsive layout

Hello, I am a user of Hyper 4 Pro, I am from China.
Recently, I used hyper to make a website. There are always problems with the responsive layout setting, and the local browser preview is normal. How can I set it correctly?


the website is:

I’m guessing that you probably need to setup Flexible Layout if you want elements to reposition in between breakpoints. If it isn’t that, can you elaborate on what the problem is and what you expect to see?