---
id: 5d822fd413a79914d39e990b
title: Part 67
challengeType: 0
dashedName: part-67
---
# --description--
Add the new `building-wrap` class to the `bb1` and `bb4` elements. This will apply the centering properties to the buildings that need it.
# --hints--
test-text
```js
assert(
$('.bb1.building-wrap').length === 1 && $('.bb4.building-wrap').length === 1
);
```
# --seed--
## --seed-contents--
```html
freeCodeCamp Skyline Project
```
# --solutions--
```html
freeCodeCamp Skyline Project
```