---
id: 5d822fd413a79914d39e98ce
title: Part 6
challengeType: 0
isHidden: true
---
## Description
Also add a `box-sizing` of `border-box` to the everything. This will make it so the border you added doesn't add any size to your elements.
## Instructions
## Tests
```yml
tests:
- text: test-text
testString: assert($("#display-body").css("box-sizing") === "border-box");
```
## Challenge Seed
```html
freeCodeCamp Skyline Project
```
## Solution
```html
freeCodeCamp Skyline Project
```