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Transition code challenge, HELP!!

I have no idea what I'm doing wrong here. I've tried several different versions of the code, in both the .box and .box:hover elements. Here is the task, followed by my code I have written. Let me know any advice you have.


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.


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

.box:hover {
    background: #F08080;
    border-radius: 50%;

5 Answers

Hi Josh,

The error you are getting gives you a hint to what transition property you have forgotten to add in your CSS. The property you have missed indicates what CSS property is going to transition "create a transition for the border-radius property"

Hope that's not to cryptic for you let me know if you need more help and I can give you the answer.


But the border-radius property in the .box:hover is already different that the .box one....so isn't there already a transition taking place???

You need to add -webkit-transition-property: border-radius; This tells the browser that you want the border-radius property to have the transition effect.

If you want better explanation Chris Coyer explains it well in his post transition-property

Oooooh, now I see what you're talking about. I totally forgot that you have to declare what property you're transitioning. Thanks for the help.