Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

CSS CSS Basics Basic Selectors ID and Class Selectors

backgroundcolor wont register

code wont register

index.html
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Developer Diane: Resume</title>
  <link rel="stylesheet" href="page.css">
  <link rel="stylesheet" href="style.css">
</head>
<body>
  <main>
    <header class="main-header">
      <div>
        <h1 class="main-heading">Developer Diane: Resume</h1>
        <address>
          <p>website: developerdiane.com</p>
          <p>email: diane@developerdiane.com</p>
        </address>
        <img src="developer-diane.jpg" alt="Developer Diane coding on her laptop.">
      </div>
    </header>          
    <section id="experience">
      <h2>Experience</h2>
      <ul>
        <li>
          <h3>Super Web Design Shop</h3>
          <p>Junior Developer</p>
          <p class="date special">February 2020-present</p>
        </li>
        <li>
          <h3>Pretty Good Websites, Inc.</h3>
          <p>Web Development Intern</p>
          <p>July 2019-January 2020</p>
        </li>
      </ul>
    </section>
    <footer>Ā©2020 Developer Diane.</footer>
  </main>
</body>
</html>
style.css
.main-header {
  background-color: orange;
}
.main-heading {
 font-size: 72px;
 #experience {
 background-color: lightsteelblue;
  }

1 Answer

Steven Parker
Steven Parker
231,084 Points

The syntax highlighting gives you a clue where you see the red color above.

The problem is that the rule for ".main-heading" has no closing brace, which causes the next rule to be ignored. Just add the missing brace and you'll have it.