---
id: 615380dff67172357fcf0425
title: Step 7
challengeType: 0
dashedName: step-7
---
# --description--
Normalize your box model by creating a `*` selector and setting the `box-sizing` property to `border-box`.
# --hints--
You should have a `*` selector.
```js
assert.exists(new __helpers.CSSHelp(document).getStyle('*'));
```
Your `*` selector should have a `box-sizing` property set to `border-box`.
```js
assert(new __helpers.CSSHelp(document).getStyle('*')?.boxSizing === 'border-box');
```
# --seed--
## --seed-contents--
```html
Photo Gallery
