Learn CSS Variables by Building a City Skyline - Step 103

Tell us what’s happening:
Not really an ask for helping but this is to point out an omission possibly by error in the step 103 .
The class you are to style is not given which may make the instruction quite confusing for a first timer.
Best regards, and thank you Freecodecamp for creating a free platform for everyone to learn.

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User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.114 Safari/537.36 Edg/103.0.1264.62

Challenge: Learn CSS Variables by Building a City Skyline - Step 103

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