What backend should a frontend developer know?

Question

Frontend

Hi all! I would like to ask such a question that a front-end developer should know from the back at least at a basic level in order to make their sites.
PS I want to apologize in advance for the fact that the question may be slightly incorrect or incorrectly formulated.

Answer 1

depends on the requirements for the site, the simplest option is nothing, you place your static html and it works