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freeCodeCamp/curriculum/challenges/english/01-responsive-web-design/css-variables-skyline/step-007.md
Nicholas Carrigan (he/him) b36cdbafd1 chore: rename "part" to "step" (#43934)
* chore: rename part to step

* chore: update metas

* chore: more renaming

* chore: update tooling

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* chore(tools): title testing
2021-10-21 18:07:52 +01:00

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---
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
// TODO: Editor adds margin as preferential style - 8px is always added.
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
<!DOCTYPE html>
<html>
<head>
<title>freeCodeCamp Skyline Project</title>
<link href="styles.css" rel="stylesheet" type="text/css" />
</head>
<body>
</body>
</html>
```
```css
* {
border: 1px solid black;
box-sizing: border-box;
}
--fcc-editable-region--
--fcc-editable-region--
```