Use CSS Variables to change several elements at once

In questions it’s asked to change the value of --penguin-skin but in code we’re changing the value of skin, belly and beak. Please correct the question because it wasted a lot of time for me. The explaination related to this topic is also very less. I don’t even know why I did that, please provide a better explaination for this topic.

Link to the challenge : Basic CSS - Use CSS Variables to change several elements at once

There should also be an “e” at the end of each use of “declar” so it reads, “declare”

Haha Exactly but that doesn’t matter much, the only thing matters is --penguin-skin