# Stuck on step 42 of learn css variables by building a city skyline

**URL:** <https://group.classcentral.com/t/stuck-on-step-42-of-learn-css-variables-by-building-a-city-skyline/24722>\
**Category:** Web Development Bootcamp\
**Created:** [March 26, 2022, 3:30am UTC](https://group.classcentral.com/t/stuck-on-step-42-of-learn-css-variables-by-building-a-city-skyline/24722 "2022-03-26T03:30:21Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![sumi1213](https://avatars.discourse-cdn.com/v4/letter/s/f05b48/32.png) [@sumi1213](https://group.classcentral.com/u/sumi1213)\
**Post date:** [March 26, 2022, 3:30am UTC](https://group.classcentral.com/t/stuck-on-step-42-of-learn-css-variables-by-building-a-city-skyline/24722/1 "2022-03-26T03:30:21Z")

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Hi,

please help me out, i am stuck on step 42 for more than a day.

 ![image](https://us1.discourse-cdn.com/flex016/uploads/ccstudygroup/original/2X/7/71575f68a16dc0cd41c8e3da8a3c727a88a055cf.png)

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<div class="post-metadata">

**Author:** ![ilona](https://avatars.discourse-cdn.com/v4/letter/i/6f9a4e/32.png) [@ilona](https://group.classcentral.com/u/ilona)\
**Post date:** [March 26, 2022, 6:28pm UTC](https://group.classcentral.com/t/stuck-on-step-42-of-learn-css-variables-by-building-a-city-skyline/24722/2 "2022-03-26T18:28:04Z")

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I think you’re supposed to add it in the html, like:

```auto
<div class="bb1a bb1-window"></div>

```

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<div class="post-metadata">

**Author:** ![devxman](https://avatars.discourse-cdn.com/v4/letter/d/96bed5/32.png) [@devxman](https://group.classcentral.com/u/devxman)\
**Post date:** [March 27, 2022, 6:14am UTC](https://group.classcentral.com/t/stuck-on-step-42-of-learn-css-variables-by-building-a-city-skyline/24722/3 "2022-03-27T06:14:25Z")

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You need to add the class bb1-window to bb1a, bb1b, bb1c  
I hope this help 🙂

 ![Learn CSS Variables by Building a City Skyline error](https://us1.discourse-cdn.com/flex016/uploads/ccstudygroup/original/2X/c/caadd99662533294b8f48e66778c7f6dabf68a22.jpeg)

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<div class="post-metadata">

**Author:** ![sumi1213](https://avatars.discourse-cdn.com/v4/letter/s/f05b48/32.png) [@sumi1213](https://group.classcentral.com/u/sumi1213)\
**Post date:** [March 28, 2022, 8:02am UTC](https://group.classcentral.com/t/stuck-on-step-42-of-learn-css-variables-by-building-a-city-skyline/24722/4 "2022-03-28T08:02:00Z")

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Thanks guys!

i have another problem, stuck at step 52…

could you help me please?

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<div class="post-metadata">

**Author:** ![siddiqahamed2672465](https://sea2.discourse-cdn.com/flex016/user_avatar/group.classcentral.com/siddiqahamed2672465/32/2689_2.png) [@siddiqahamed2672465](https://group.classcentral.com/u/siddiqahamed2672465)\
**Post date:** [July 9, 2022, 8:32am UTC](https://group.classcentral.com/t/stuck-on-step-42-of-learn-css-variables-by-building-a-city-skyline/24722/5 "2022-07-09T08:32:38Z")

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Hi,  
Just add the “bb1-window” class to the div containing “bb1a”.

EX:" \< div class=“bb1a bb1-window”\>\</ div \>