title: React display tree branch in UI with one element corresponding to many
body: <p>I want to make a UI that displays one item corresponding to multiple items, with a branch drawing in the middle. In React, is there a way to create the UI below, which adapts depending on the number of items displayed?</p>
  <p><a href="https://i.stack.imgur.com/TcLrv.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/TcLrv.jpg" alt="branch display in ui" /></a></p>