Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

CSS CSS Selectors Going Further with Attribute Selectors and Pseudo-Classes :first-child and :last-child Challenge

Jennifer Mattheson
Jennifer Mattheson
4,491 Points

Hi, I keep getting an error on this quiz question, although I'm pretty sure I'm correct. Am I missing something?

It says:

Create a pseudo-class selector that targets the first-child li in .main-nav. Remove all border styles by setting border to none. Then, set the top-left and bottom-left border-radius to 5px.

Here is my answer:

li:first-child { border: none; }

li:last-child { border-top-left-radius: 5px; border-bottom-left-radius: 5px; }

I keep getting this error message: "Bummer! Make sure you're defining the correct border-radius values."

I have also tried this, and also get the same error: border-radius: 5px 0px 0px 5px;

style.css
/* Complete the challenge by writing CSS below */

li:first-child {
  border: none;
}

li:last-child {
  border-top-left-radius: 5px;
  border-bottom-left-radius: 5px; 
}
index.html
<!DOCTYPE html>
<html>
<head>
    <title>Selectors</title>
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href='http://fonts.googleapis.com/css?family=Nunito:400,300' rel='stylesheet' type='text/css'>
  <link rel="stylesheet" href="page.css">
  <link rel="stylesheet" href="style.css">
</head>
<body>
    <header>
      <h1>My Site!</h1>
      <ul class="main-nav">
        <li><a href="#">Home</a></li>
        <li><a href="#">About</a></li>
        <li><a href="#">Work</a></li>
        <li><a href="#">Contact</a></li>
      </ul>
    </header>
    <div>
      <p>Tattooed viral put a bird on it skateboard. Drinking vinegar locavore squid farm-to-table, dreamcatcher tattooed kitsch scenester. Tousled wolf squid Wes Anderson PBR, Williamsburg banh mi dreamcatcher stumptown ethnic sartorial mlkshk. Hella mixtape bespoke mustache Bushwick. Post-ironic hashtag jean shorts, Truffaut organic roof party pop-up wayfarers selvage narwhal. Mixtape roof party twee, post-ironic bespoke hella artisan meggings Carles brunch pop-up Tonx street art normcore. DIY paleo slow-carb occupy tofu fingerstache.</p>
    </div>
</body>
</html>

2 Answers

You are missing the border radius in the first child.

li:first-child {
  border: none;
  border-top-left-radius: 5px;
  border-bottom-left-radius: 5px; 
}
li:last-child {
  border-top-right-radius: 5px;
  border-bottom-right-radius: 5px; 
}
Austin Baird
Austin Baird
3,842 Points

Hi Jennifer! It looks like you may also need to put the class .main-nav before your li:last-child selector.

Like so:

.main-nav li:first-child {
  border: none;
  border-top-left-radius: 5px;
  border-bottom-left-radius: 5px; 
}
.main-nav li:last-child {
  border-top-right-radius: 5px;
  border-bottom-right-radius: 5px; 
}