---
id: 5d822fd413a79914d39e98d4
title: Part 12
challengeType: 0
dashedName: part-12
---
# --description--
Give the parts of your building `width` and `height` properties with these values: `70%` and `10%` to `bb1a`, `80%` and `10%` to `bb1b`, `90%` and `10%` to `bb1c`, and `100%` and `70%` to `bb1d`. Remember that these percentages are relative to the parent and note that the heights will add up to 100% to fill the container vertically.
# --hints--
test-text
```js
const bb1a = code.match(/\.bb1a\s*{[\s\S]+?[^}]}/g)[0];
const bb1b = code.match(/\.bb1b\s*{[\s\S]+?[^}]}/g)[0];
const bb1c = code.match(/\.bb1c\s*{[\s\S]+?[^}]}/g)[0];
const bb1d = code.match(/\.bb1d\s*{[\s\S]+?[^}]}/g)[0];
assert(
/width\s*:\s*70%\s*(;|})/g.test(bb1a) &&
/height\s*:\s*10%\s*(;|})/g.test(bb1a) &&
/width\s*:\s*80%\s*(;|})/g.test(bb1b) &&
/height\s*:\s*10%\s*(;|})/g.test(bb1b) &&
/width\s*:\s*90%\s*(;|})/g.test(bb1c) &&
/height\s*:\s*10%\s*(;|})/g.test(bb1c) &&
/width\s*:\s*100%\s*(;|})/g.test(bb1d) &&
/height\s*:\s*70%\s*(;|})/g.test(bb1d)
);
```
# --seed--
## --seed-contents--
```html
freeCodeCamp Skyline Project
```
# --solutions--
```html
freeCodeCamp Skyline Project
```