What should you know when copying a site that is made on 1C-Bitrix?

Question

css

I lost access to the site, but I still need it.
I want to download it, but it is made on Bitrix.
When I download, the kernel also downloads.
How can I remove the excess and leave only the files I need?
More precisely, where should I start cleaning?

Answer 1

https://codepen.io/anon/pen/NVQjMX?editors=1100

Answer 2

And wrote to the hosting support is not an option? What kind of magical access is lost, which is not tied to the mail, etc.
Or the site is not yours? (then not at the address here at all)

Answer 3

Lost access to the site, but I still need it

What access? In the database, admin panel, ftp?
It's okay, more is better than less.
Required :
bitrix/php_interface
bitrix/templates
everything else that is in the root except for the bitrix folder, from it you need what is above
if there was no intervention in the system core and third-party solutions are not used, otherwise they will also need to be installed