---
id: 5d822fd413a79914d39e9914
title: Part 76
challengeType: 0
dashedName: part-76
---
# --description--
Move the `background-color` property and value from `fb1` to `fb1b`.
# --hints--
test-text
```js
const fb1b = code.match(/\.fb1b\s*{[\s\S]+?[^}]}/g)[0];
assert(
/background-color\s*:\s*var\(\s*--building-color4\s*\)\s*(;|})/g.test(fb1b)
);
```
# --seed--
## --seed-contents--
```html
freeCodeCamp Skyline Project
```
# --solutions--
```html
freeCodeCamp Skyline Project
```