---
id: 5d822fd413a79914d39e98e9
title: Part 33
challengeType: 0
dashedName: part-33
---
# --description--
I see some code that can be optimized. Move the `position` and `top` properties and values from `foreground-buildings` to `background-buildings`. Then select both `background-buildings` and `foreground-buildings` there, effectively applying those styles to both of the elements. You can use a comma (`,`) to separate selectors like this: `selector1, selector2`.
# --hints--
test-text
```js
assert(
$('.background-buildings').css('position') === 'absolute' &&
$('.background-buildings').css('top') === '0px' &&
/(\.background-buildings\s*,\s*\.foreground-buildings|\.foreground-buildings\s*,\s*\.background-buildings)/g.test(
code
)
);
```
# --seed--
## --seed-contents--
```html
freeCodeCamp Skyline Project
```
# --solutions--
```html
freeCodeCamp Skyline Project
```