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 Transitions and Transforms Getting Started with CSS Transitions Transition Challenge

JJ T
JJ T
6,276 Points

Next, set the duration of the height transition to .6 seconds.

Can someone please help me with what I'm doing wrong??

It says: Bummer! Are you writing the property inside the '.collap

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

.collapsed {
    height: 0;
    overflow: hidden; 
transition-duration: .6s;
transition-property: height;
}

.expand:checked ~ .collapsed {
    height: 34vh;
  transition-property: collapsed;
}
index.html
<!DOCTYPE html>
<html>
<head>
    <title>CSS Transitions</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link href='https://fonts.googleapis.com/css?family=Open+Sans:400,300,600,700,800' rel='stylesheet' type='text/css'>
    <link rel="stylesheet" href="page.css">
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <div class="container clearfix">

        <input type="checkbox" class="expand" id="expand"><label for="expand">Expand Height</label>

        <div class="collapsed">
            <h2>Chocolate cupcake dessert</h2>
            <p> Tiramisu apple pie sesame snaps lemon drops pie bonbon wafer sweet jujubes. Toffee cupcake wafer. Dessert jelly ice cream sweet roll chocolate bar toffee oat cake cotton candy sweet roll. Cotton candy sweet oat cake croissant macaroon gummies cake gummi bears bear claw. Tootsie roll biscuit marshmallow topping.</p>
        </div>

    </div>
</body>
</html>

1 Answer

Raffael Dettling
Raffael Dettling
32,998 Points

The code inside the .collapse rule is correct but inside the .expand:checked ~ .collapsed rule is an unnecessary transition-property which triggers the error

.collapsed {
    height: 0;
    overflow: hidden;
  transition-duration: .6s;
  transition-property: height;
}

.expand:checked ~ .collapsed {
    height: 34vh;
}
JJ T
JJ T
6,276 Points

Thanks!! But how did it get there??

Raffael Dettling
Raffael Dettling
32,998 Points

Looks like you accidentally put it there ^^ I restarted the challenge and it wasnยดt there.

JJ T
JJ T
6,276 Points

Ow hahah Thanks again !