JSFiddle - React, Tailwind, and code Playground

HTML

<ol>
  <li> <a href="#Lnk">foo</a>

  </li>
  <li> <a href="#Lnk">bar</a>
    <ol>
      <li> <a href="#Lnk">baz</a>

      </li>
      <li> <a href="#Lnk">qux</a>

      </li>
    </ol>
  </li>
  <li> <a href="#Lnk">alpha</a>
    <ol>
      <li> <a href="#Lnk">beta</a>

      </li>
      <li> <a href="#Lnk">gamma</a>

      </li>
    </ol>
  </li>
</ol>

CSS

ol {
    counter-reset: item
}
li {
    display: block
}
li:before {
    content: counters(item, ".")" ";
    counter-increment: item
}