---
id: 5d822fd413a79914d39e98d5
title: Part 13
challengeType: 0
isBeta: true
---
## Description
Give your `bb1` element these style properties: `display: flex;`, `flex-direction: column;`, and `align-items: center;`. This will center the parts of the building using "flex" or "flexbox". You will learn about it in more detail on another project.
## Instructions
## Tests
```yml
tests:
- text: test-text
testString: const bb1 = $(".bb1"); assert(bb1.css("display") === "flex" && bb1.css("flex-direction") === "column" && bb1.css("align-items") === "center");
```
## Challenge Seed
```html
freeCodeCamp Skyline Project
```