title: how to change color in background?
body: <p>I looked at these codes on this page
  <a href="https://codepen.io/kevinhartwig/pen/zYWRjWq" rel="nofollow noreferrer">https://codepen.io/kevinhartwig/pen/zYWRjWq</a></p>
  <p>I don't understand this line code:</p>
  <pre><code>entry.target.id === &quot;secondSection&quot; ? &quot;bg-red&quot; : &quot;bg-light-pink&quot;;
  </code></pre>
  <p>if I want to add more color to the background page like this page:
  <a href="https://backstagetalks.com/" rel="nofollow noreferrer">https://backstagetalks.com/</a>
  what can I edit?</p>