Why does the layout of the first screen go to safari?

Question

css

I am making a website for a client. His safari says that the first screen goes only buttons.
There is an assumption that he has an old version of the browser, but maybe the layout is crooked. Who with a poppy can help determine what the problem is?
here is the site vadimbashirof.ru

Answer 1

Try running your css through autoprefixer.github.io and then ask the client if the problem is fixed.
And what kind of dic (see below)?
This is what the site looks like:

Answer 2

https://www.browserstack.com/ there is a free trial period, that's enough for you.

Answer 3

Look for emulators online on the Internet and test
On apple phones, in 80% of cases it is connected with <meta viewport... >Prescribed it?