<ol> // Normal Ordered List Start //
<li><a href="#">Ordered List 1</a></li> // Anchor tag use for url //
<li><a href="#">Ordered List 2</a></li>
<li><a href="#">Ordered List 3</a></li>
<li>
<ol> // Nested Ordered List Start //
<li><a href="#">Nested Ordered List 1</a></li>
<li><a href="#">Nested Ordered List 2</a></li>
<li><a href="#">Nested Ordered List 3</a></li>
</ol> // Nested Ordered List Close //
<li>
</ol> // Normal Ordered List Close //