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

Ben Ahlander
Ben Ahlander
7,528 Points

How to target main-content with an ID selector?

What I have now:

.main-content { background-color: lightsteelblue; }

index.html
<!DOCTYPE html>
<html>
  <head>
    <title>Lake Tahoe</title>
    <link rel="stylesheet" href="page.css">
    <link rel="stylesheet" href="style.css">
  </head>
  <body> 
    <header class="main-header">
      <span>Journey through the Sierra Nevada Mountains</span>
      <h1 class="main-heading">Lake Tahoe, California</h1>
    </header>
    <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>
    <div id="main-content">
      <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 mink, bears, and Bald eagles.
      </p>
      <a href="#">See the Wildlife</a>
    </div>
  </body>
</html>
style.css
/* Complete the challenge by writing CSS below */
.main-header {
  background-color: orange;
}

.main-heading {
font-size: 72px;
}

.main-content {
background-color: lightsteelblue;
}

1 Answer

Jason Anders
MOD
Jason Anders
Treehouse Moderator 145,860 Points

Hey Ben,

Don't forget that IDs are signified with a # and classes are with a .

:) :dizzy:

Owa Aquino
Owa Aquino
19,277 Points

Selecting IDs requires # (hashtag) before the id name

#main-content{

}

While selecting classes uses . (dot/period) before the class name

.main-header{

}