Website display incomplete on mobile

My website is incomplete on my phone and I sent you an inquiry request a day ago, but I haven’t gotten an answer yet!

When I use my cell phone to browse my web page, the page is sometimes displayed incompletely, especially on the top menu, only part of it is displayed, what can I do to open it with my cell phone without incompleteness? My website is: lxcun.com

I hope to get your solution soon, and please feel free to let me know via email if you need any details about my purchase of your product, my email: mzsun66@hotmail.com. Thank you very much for your help!

Sincerely,
Alex

cc: Attached are two screenshots of mine that I hope will help, and the same problem can be found when opening my site from a cell phone.