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

Posted by Wanda Taylor
Wanda Taylor
1,691 Points

Setting border properties to none

I'm not sure I have border: none in the right place. Maybe that's why it's not coding right.

style.css 
/* Complete the challenge by writing CSS below */
.main-nav {
  border: none;
}
  li:first-child {
    border-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>
Patrick McKinney
Patrick McKinney
13,151 Points

I'm not sure what exactly you're trying to do, but the following will "show" the border radius effect:

li:first-child {
    border-radius: 5px;
    background: #888;
    border: 1px solid #000;
  }

It seems the border-radius property is usually set when there is a background color assigned to an element.

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

In general, border-radius is used with or without background colors. But in this case, since border is set to none, it will be used with a colored background established by a separate CSS file that is also included on the page.

1 Answer

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

You're written two CSS rules, but the challenge only asks for one. That one, however, would have a selector that combines the two separate ones you have now. The border: none will be fine once you've re-written the selector.

Also, you need to set the border-radius on just two corners. You'll either need two of the long-form properties or provide multiple arguments to the compact property you have now (giving it just one argument affects all four corners).

You might want to review the video that the challenge links to for border-radius settings.

Hopefully between that video and these hints you'll get it now.