---
id: 5d822fd413a79914d39e98cf
title: Step 7
challengeType: 0
dashedName: step-7
---
# --description--
You can see the `body` (it's the inner-most box on your page); the box around it is the `html` element. Make your `body` fill the whole viewport by giving it a `height` of `100vh`. Remove the default `margin` from the `body` by setting the `margin` to `0`. Finally, set the `overflow` property to `hidden` to hide any scroll bars that appear when something extends past the viewport.
# --hints--
You should use the `body` selector.
```js
assert.exists(new __helpers.CSSHelp(document).getStyle('body'));
```
Your `body` should have a `height` of `100vh`.
```js
const bodyStyles = new __helpers.CSSHelp(document).getStyle('body');
assert.equal(bodyStyles?.height, '100vh');
```
Your `body` should have a `margin` of `0`.
```js
assert.equal(new __helpers.CSSHelp(document).getStyle('body')?.margin, '0px');
```
Your `body` should have the `overflow` property set to `hidden`.
```js
assert.equal(new __helpers.CSSHelp(document).getStyle('body')?.overflow, 'hidden');
```
# --seed--
## --seed-contents--
```html
City Skyline
```
```css
* {
border: 1px solid black;
box-sizing: border-box;
}
--fcc-editable-region--
--fcc-editable-region--
```