Is it possible to have guidelines / indentation lines inside Google Chrome dev tools? Check attached photo.
I was looking for it for quite a long time and it's nothing there.
It would be very helpful in web development process.
I don't know of any way to display all the guidelines, but DevTools already does what you want to some extent:
Here's a screen shot:
The guidelines aren't too obvious in that screen shot so I added two large red arrows to point to them, but they are easier to see on the actual screen.
I am not using any theme, so perhaps you can't see those two guidelines because of the dark theme you are using? If so, try using a different theme, or no theme at all.