What is the best way to translate html template into Russian?

Question

PHP

Good day, the authorities asked a strange task, but nevertheless, as it turned out, I was not ready to answer it because I had never even asked myself the idea.
And so the
task is to dynamically translate html templates from https://wrapbootstrap.com/ and place "buy from us" on your website. The quality of the translation should be as it is, just so that everything is already in Russian.
Templates are already available. NOT iframe
As I see it
1. Google translate but it's not quite clear how to force it to rewrite the code.
2. own parser + connected translator
3. Perhaps someone has already done something similar?

Answer 1

I do not fully understand, but what is there to translate? Text?

Answer 2

I didn’t quite understand the question ... If there is a dynamic change of language by region, write a simple js that searches for and changes the text with regular expressions, that’s business.