Unable to add folders to a repository

Hi guys, I want to create a repository frontendMentor and add the solution to challenges, which are themselves folders containing several folders of scss CSS js, etc. How can I do this because earlier I did something like this only a folder name and didn’t include its inner folders.

I want to add three folders to my frontend repo

As long as the folders aren’t empty you do it the same way you add any content to a repo.

No the folder has folders with scss , images etc. As in the pic the icon for folder is different than what GitHub makes for other folders and when I’m clicking on this folder it is not opening and showing other folder

They need to contain at least one real file at the deepest level of each path.

An un-official solution that is employed quite often is to use an empty file called .gitkeep.