According to BEM, what should I create a folder for each block? "Header" has its own folder, "main" has its own, and "footer" has its own?

Question

BEM

Does each block of code need its own separate directory?

Answer 1

It's not obligatory. The official documentation discusses different file structure schemes. The package for each block is Nested , there are also Flat and Flex for more details in the article Organizing the file structure .
It is worth noting all this recommendation, you can get by with only two files style.css and script.js , it is only important to divide the composition into blocks, elements and modifiers.
The whole point is in three letters - BEM, the rest are tools and personal preferences.