---
id: 5d822fd413a79914d39e98f5
title: Part 45
challengeType: 0
dashedName: part-45
---
# --description--
It's a little hidden behind the foreground buildings, but you can see the three color gradient there. Since you are using that now, remove the `background-color` property from `bb1d`.
# --hints--
test-text
```js
const bb1dStyle = code.match(/\.bb1d\s*{[\s\S]+?[^}]}/g)[0];
assert(!/background-color/g.test(bb1dStyle));
```
# --seed--
## --seed-contents--
```html
freeCodeCamp Skyline Project
```
# --solutions--
```html
freeCodeCamp Skyline Project
```