DocFx: how to create table of contents navigation on site?

Question

I want to create a table of contents that looks like what DocFx has on their official site:

Using the default docfx init command using all of the default values my website looks like this upon build:

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I've tried tampering with the toc.yml files with no such luck. How do I get this kind of navigation, and for that matter the top-level navigation with DocFx?

Answer 1

Turns out the issue was trying to serve my files locally - security sandboxing prevented some of the JavaScript from running. Worked fine once I used docfx --serve instead.