Here is the link to the challenge:
The step requires one to link a label to its input element, and the hint makes it clear this should be done with a ‘for’ attribute that matches the ‘id’ element.
I see the edit. Thank you for that; I never realised the id was missing. While we’re on the subject, could you please briefly explain what the id element actually does and why it’s necessary to include it here? I can see that it’s not optional (and that’s probably where I messed up) but I’m not sure what it signals to the [compiler?].