---
id: 5d822fd413a79914d39e98f4
title: Part 44
challengeType: 0
---
## Description
Gradients can use as many colors as you want like this:
```css
gradient-type(
color1,
color2,
color3
);
```
Add a `linear-gradient` to `bb1d` with `orange` as the first color, `--building-color1` as the second, and `--window-color1` as the third. Remember to use the gradient on the `background` property.
## Instructions
## Tests
```yml
tests:
- text: test-text
testString: const bb1d = code.match(/\.bb1d\s*{[\s\S]+?[^}]}/g)[0]; assert(/background\s*:\s*linear-gradient\(\s*orange\s*,\s*var\(\s*--building-color1\s*\)\s*,\s*var\(\s*--window-color1\s*\)\s*\)\s*(;|})/g.test(bb1d));
```
## Challenge Seed
```html
freeCodeCamp Skyline Project
```