What does “./” (dot slash) refer to in terms of an HTML file path location?

Question

I know ../ means go up a path, but what does ./ mean exactly?

I was recently going through a tutorial and it seems to be referring to just

Answer 1

./ is the the folder that the working file is in:

So in /index.htm ./ is the root directory
but in /css/style.css ./ is the css folder.

This is important to remember because if you move CSS from /index.htm to /css/style.css the path will change.