---
id: 5d822fd413a79914d39e9919
title: Part 81
challengeType: 0
isHidden: true
---
## Description
When you make the left and right borders bigger, the border on the bottom will expand to be the width of the combined left and right border widths. Add `2vw solid transparent;` as the value of the `border-left` and `border-right` properties of `fb1a`. They will be invisible, but it will make the border on the bottom `4vw` wide.
## Instructions
## Tests
```yml
tests:
- text: test-text
testString: const fb1a = code.match(/\.fb1a\s*{[\s\S]+?[^}]}/g)[0]; assert(/border-left\s*:\s*2vw\s+solid\s+transparent\s*(;|})/g.test(fb1a) && /border-right\s*:\s*2vw\s+solid\s+transparent\s*(;|})/g.test(fb1a));
```
## Challenge Seed
```html
freeCodeCamp Skyline Project
```