Link to Internal Sections of a Page with Anchor Elements

Summary

a elements can be used to create internal links to different sections within a webpage.
To create an internal link, you assign a link’s href attribute to a hash symbol # plus the value of the id attribute for the element that you want to internally link to, usually further down the page. You then need to add the same id attribute to the element you are linking to.
The id is an attribute that uniquely describes an element.

Final Code

<h2>CatPhotoApp</h2>
<main>
  <a href="#footer">Jump to Bottom</a>
  <img src="https://www.bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back.">
  <p>Kitty ipsum dolor sit amet, shed everywhere...</p>
  <p>Purr jump eat the grass rip the couch scratched sunbathe...</p>
  <p>Meowwww loved it, hated it, loved it, hated it yet spill litter box...</p>
  <p>Intently stare at the same spot poop in the plant pot...</p>
</main>
<footer id="footer">Copyright Cat Photo App</footer>