JSFiddle - React, Tailwind, and code Playground
HTML
<ol>
<li>BLA-BLA-BLA
<ol>
<li>Bla-bla-bla.</li>
<li> Bla-bla-bla.</li>
<li> Bla-bla-bla.
<li>lalal - balalala
<ol>
<li> two depth inner </li>
</ol>
</li>
</ol>
</li>
</ol>
CSS
OL { counter-reset: item }
LI { display: block }
LI:before { content: counters(item, ".") " "; counter-increment: item }