Reply To: Separate content panels with caret and drop shadow

[Atelierbram]

I would try something with a polygon clip-path, for a nice helper tool search for: “CSS clip-path maker Bennett Feely Clippy”

I started something here:

https://codepen.io/atelierbram/pen/oeYZbL

… I have no time right now to finish the shadow of the caret, which is obviously the trickiest part.