Need to markup a list into a neatly laid out directory structure? You can do it using ASCII art repeated over and over or using this CSS snippet by Patrick H. Lauke to get it done. This snippet has up to six levels nested structure that you can add and you can extend it to add more if you need to.
If you are having trouble with the pen, try the archived copy on GitHub
Directory Structure Snippet
See the Pen ASCII-art folder structure diagram in semantic markup + CSS by Patrick H. Lauke (@patrickhlauke) on CodePen.default