HTML forms step 41, I am having difficulty using the pseudo-class

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HTML forms step 41 has been giving me trouble for over a month.
I am a new programmer, so I don’t exactly know how i’m supposed to use it, pls help me!

Please post your actual code instead of a picture. Also, please post a link to the challenge. Thanks

I know the rule, but i am not actually sure of how to use it

What ‘rule’ are you referring to?

The :not(:last-of-type) element

Can you please post your actual code and a link to the challenge?