freeCodeCamp/curriculum/challenges/espanol/03-front-end-libraries/sass/extend-one-set-of-css-styles-to-another-element.md

---
id: 587d7fa5367417b2b2512bbd
title: Extend One Set of CSS Styles to Another Element
challengeType: 0
forumTopicId: 301456
dashedName: extend-one-set-of-css-styles-to-another-element
---

# --description--

Sass has a feature called `extend` that makes it easy to borrow the CSS rules from one element and build upon them in another.

For example, the below block of CSS rules style a `.panel` class. It has a `background-color`, `height` and `border`.

```scss
.panel{
  background-color: red;
  height: 70px;
  border: 2px solid green;
}
```

Now you want another panel called `.big-panel`. It has the same base properties as `.panel`, but also needs a `width` and `font-size`. It's possible to copy and paste the initial CSS rules from `.panel`, but the code becomes repetitive as you add more types of panels. The `extend` directive is a simple way to reuse the rules written for one element, then add more for another:

```scss
.big-panel{
  @extend .panel;
  width: 150px;
  font-size: 2em;
}
```

The `.big-panel` will have the same properties as `.panel` in addition to the new styles.

# --instructions--

Make a class `.info-important` that extends `.info` and also has a `background-color` set to magenta.

# --hints--

Your `info-important` class should have a `background-color` set to `magenta`.

```js
assert(
  code.match(
    /\.info-important\s*?{[\s\S]*background-color\s*?:\s*?magenta\s*?;[\s\S]*}/gi
  )
);
```

Your `info-important` class should use `@extend` to inherit the styling from the `info` class.

```js
assert(
  code.match(/\.info-important\s*?{[\s\S]*@extend\s*?.info\s*?;[\s\S]*/gi)
);
```

# --seed--

## --seed-contents--

```html
<style type='text/scss'>
  h3{
    text-align: center;
  }
  .info{
    width: 200px;
    border: 1px solid black;
    margin: 0 auto;
  }




</style>
<h3>Posts</h3>
<div class="info-important">
  <p>This is an important post. It should extend the class ".info" and have its own CSS styles.</p>
</div>

<div class="info">
  <p>This is a simple post. It has basic styling and can be extended for other uses.</p>
</div>
```

# --solutions--

```html
<style type='text/scss'>
  h3{
    text-align: center;
  }
  .info{
    width: 200px;
    border: 1px solid black;
    margin: 0 auto;
  }
  .info-important{
    @extend .info;
    background-color: magenta;
  }



</style>
<h3>Posts</h3>
<div class="info-important">
  <p>This is an important post. It should extend the class ".info" and have its own CSS styles.</p>
</div>

<div class="info">
  <p>This is a simple post. It has basic styling and can be extended for other uses.</p>
</div>
```