<ol>
  <li>Wake up</li>
  <li>Feed dog</li>
  <li>Start blog post</li>
</ol>

<div class="note">... fell asleep for 5 hours ...</div>

<ol start="4">
  <li>Finish blog post</li>
  <li>Go to bed</li>
</ol>

.note {
  background: lightyellow;
  border: 1px solid yellow;
  padding: 1rem;
}