Highlight or Grab CSS in Dev Tools

I was a huge fan of Firebug. A lot of useful features were in it are not in Firefox which is why I used Firebug.

When I view a site in Firefox and then open Dev Tools > Style Editor, I was able to click the bottom CSS path to grab the CSS associated with it. When clicking, that CSS in the bottom path would appear over in the Rules panel on the right where I could then make adjustments to that specific path.

That bottom path is not clickable, nor the path fully rendering for me to actually manually type it in. You cannot even right click to copy the path.

Is there a way to make this clickable in Firefox and if so, can someone share how to do it. If not, is there a place for recommendations for this to be added? Thanks in advance.