I can imagine how handy could be, besides "View Selected Source Code", one could have "Copy Selection Source Code", embedding all its HTML and CSS available contents.
I will test it. Thanks. In advance to your ask, I use too much "view selected source", cause I write a lot to Social Media and I have the habit of 'historying', log all my comments. I think that, instead of "View", one could have directly the "Copy CSS Content" menu.