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


Jeff Mathis
Jeff Mathis
3,935 Points


Using the prefix for WebKit-based browsers, create a transition for the border-radius property of .box. Give the transition a duration of 2 seconds, a delay of 1 second, and a timing function that maintains a linear motion.:

here is my code.....its not being accepted as the correct code for the challenge..... any help ? ***/

.box { border-radius: 15px; background: #4682B4; -webkit-transition-duration: 2s; -webkit-transition-delay: 1s; -webkit-transition-timing-function : linear;



Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points

That's odd. It looks kosher to me. Maybe it wants div#box? I can't see any problem with your properties and values, unless it's simply that you have a space between your colon in timing-function:linear?

1 Answer

You have the transition-duration, transition-delay and the transition-timing-function but you are missing the transition-property.