Stuck on the HTML5 elements

Tell us what’s happening:
What does “as children” mean? What do I do?

Your code so far


<h2>CatPhotoApp</h2>

<p>Kitty ipsum dolor sit amet, shed everywhere shed everywhere stretching attack your ankles chase the red dot, hairball run catnip eat the grass sniff.</p>
<main><p>Purr jump eat the frass rup the couch scratched sunbathe, shed everywhere rip the couch sleep in the sink fluffy fur catnip scratched.</p></main>

Your browser information:

User Agent is: Mozilla/5.0 (Linux; Android 6.0; RCT6513W87 Build/MRA58K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.158 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/responsive-web-design/basic-html-and-html5/introduction-to-html5-elements

A child element is one that is nested inside another element because it is wrapped in the parent elements tags.

<body>
  <h1>My Page</h1>
  <p>Isn't my page awesome?</p>
</body>

In above example the h1 element and the p element are children of the body element because both are enclosed within the <body>...</body> tags