The below menu, once inserted onto your page - you can customise the table to your liking - colors etc

Menu Tree Example
(non working links - for demo only)

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Heading 1

  Sub 1
  Sub 2
  Sub 3
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Heading 2

  Sub 1
  Sub 2
  Sub 3
+

Heading 3

  Sub 1
  Sub 2
  Sub 3