---
id: 5d822fd413a79914d39e990e
title: Part 70
challengeType: 0
dashedName: part-70
---
# --description--
Give the `bb4-window` class a `width` of `18%`, a `height` of `90%`, and add your `--window-color4` variable as the `background-color`.
# --hints--
test-text
```js
const bb4Window = code.match(/\.bb4-window\s*{[\s\S]+?[^}]}/g)[0];
assert(
/width\s*:\s*18%\s*(;|})/g.test(bb4Window) &&
/height\s*:\s*90%\s*(;|})/g.test(bb4Window) &&
/background-color\s*:\s*var\(\s*--window-color4\s*\)\s*(;|})/g.test(
bb4Window
)
);
```
# --seed--
## --seed-contents--
```html
freeCodeCamp Skyline Project
```
# --solutions--
```html
freeCodeCamp Skyline Project
```