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 (2014) Basic Selectors ID and Class Selectors

Posted by esteban lopez
esteban lopez
1,397 Points

in style sheet target main-header with a class selector. Then, add a background color property and set the value orange

am stuck on this challenge

index.html 
<html>
  <head>
    <title>Lake Tahoe</title>
    <link rel="stylesheet" href="css/style.css">
  </head>
  <body> 
    <header id="top" class="main-header"> 
      <span>Journey through the Sierra Nevada Mountains</span>
      <h1>Lake Tahoe, California</h1>
    </header>
        <div class="primary-content">
            <p>
                Lake Tahoe is one of the most breathtaking attractions located in California. It's home to a number of ski resorts, summer outdoor recreation, and tourist attractions. Snow and skiing are a significant part of the area's reputation.
            </p>
            <a href="#">Find out more</a>
      <h2>Check out all the Wildlife</h2>
      <p>
        As spawning season approaches the fish acquire a humpback and protuberant jaw. After spawning they die and their carcasses provide a feast for gatherings of <a href="#">mink</a>, <a href="#">bears</a>, and <a href="#">Bald eagles</a>.
      </p>
            <a href="#">See the Wildlife</a>
        </div>

        <div class="secondary-content">
      <h3>From Tents to Resorts</h3>
      <p>
        Lake Tahoe is full of wonderful places to stay. You have the ability to sleep in the outdoors in a tent, or relax like a king at a five star resort. Here are our top three resorts:
      </p>
      <ul>
        <li><a href="#">Lake Tahoe Resort Hotel</a></li>
        <li><a href="#">South Lake Tahoe Resorts</a></li>
        <li><a href="#">Tahoe Ski Resort Lodging</a></li>
      </ul>         
      <h3>Pack Accordingly</h3>
      <p>
        One of most important things when it comes to traveling through the great outdoors is packing accordingly. Here are a few tips:
      </p>
      <ol>
        <li>Bring layers of clothing</li>
        <li>Pack sunscreen</li>
        <li>Carry extra water just in case</li>
        <li>Pack light</li>
      </ol>
        </div>

        <footer id="main-footer">
            <p>All rights reserved to the state of <a href="#">California</a>.</p>
            <a href="#top">Back to top &raquo;</a>
        </footer>
  </body>
</html>
style.css 
.main-header {
  background-color: orange; 
}

1 Answer

Julian Garcia
Julian Garcia
18,380 Points
Julian Garcia
Julian Garcia
18,380 Points

In html file you have to add two classes and one id. 

    <header class="main-header">
      ...
      <h1 class="main-heading">Lake Tahoe, California</h1>
    ...
    <div id="main-content">
      <h2>Check out all the Wildlife</h2>
      ....

In css file you need to specify the style to use with those classes and id that you define in html file. To refer to id you use the # symbol instead of dot symbol used to refer to classes.

.main-header{
  background-color:orange; 
}

.main-heading{
  font-size:72px;
}
#main-content{
  background-color:lightsteelblue; 
}