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---
id: 60a3e3396c7b40068ad69975
title: Step 12
challengeType: 0
dashedName: step-12
---
# --description--
Write a new rule using the `.frame` class selector.
fix(curriculum): improve instructions in rothko-painting (#44816) * Improved instructions in rothko painting lesson * Removed duplicate line in step 42 * Update curriculum/challenges/english/14-responsive-web-design-22/learn-the-css-box-model-by-building-a-rothko-painting/step-012.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/14-responsive-web-design-22/learn-the-css-box-model-by-building-a-rothko-painting/step-014.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/14-responsive-web-design-22/learn-the-css-box-model-by-building-a-rothko-painting/step-015.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/14-responsive-web-design-22/learn-the-css-box-model-by-building-a-rothko-painting/step-021.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/14-responsive-web-design-22/learn-the-css-box-model-by-building-a-rothko-painting/step-022.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/14-responsive-web-design-22/learn-the-css-box-model-by-building-a-rothko-painting/step-034.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/14-responsive-web-design-22/learn-the-css-box-model-by-building-a-rothko-painting/step-041.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/14-responsive-web-design-22/learn-the-css-box-model-by-building-a-rothko-painting/step-042.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/14-responsive-web-design-22/learn-the-css-box-model-by-building-a-rothko-painting/step-044.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/14-responsive-web-design-22/learn-the-css-box-model-by-building-a-rothko-painting/step-045.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/14-responsive-web-design-22/learn-the-css-box-model-by-building-a-rothko-painting/step-020.md Co-authored-by: Sem Bauke <46919888+Sembauke@users.noreply.github.com> * Update curriculum/challenges/english/14-responsive-web-design-22/learn-the-css-box-model-by-building-a-rothko-painting/step-014.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> * Update curriculum/challenges/english/14-responsive-web-design-22/learn-the-css-box-model-by-building-a-rothko-painting/step-034.md Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> Co-authored-by: Shaun Hamilton <shauhami020@gmail.com> Co-authored-by: Sem Bauke <46919888+Sembauke@users.noreply.github.com>
2022-01-21 19:01:41 +05:30
Use the `border` shorthand declaration to give the `.frame` element a solid, black border with a width of `50px`.
# --hints--
Your code should have a `.frame` selector.
```js
const hasFrame = new __helpers.CSSHelp(document).getStyle('.frame');
assert(hasFrame);
```
You should set the `border` property to `50px solid black`.
```js
const hasBorder = new __helpers.CSSHelp(document).getCSSRules().some(x => x.style.border === '50px solid black');
assert(hasBorder);
```
Your `.frame` element should have a `50px solid black` `border`.
```js
const frameBorder = new __helpers.CSSHelp(document).getStyle('.frame')?.getPropertyValue('border');
assert(frameBorder === '50px solid black');
```
# --seed--
## --seed-contents--
```css
.canvas {
width: 500px;
height: 600px;
background-color: #4d0f00;
}
--fcc-editable-region--
--fcc-editable-region--
```
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Rothko Painting</title>
<link href="./styles.css" rel="stylesheet">
</head>
<body>
<div class="frame">
<div class="canvas">
</div>
</div>
</body>
</html>
```