freeCodeCamp/curriculum/challenges/en/03-front-end-libraries/sass/use-each-to-map-over-items-in-a-list.en.md

---
id: 587d7dbf367417b2b2512bba
title: Use @each to Map Over Items in a List
required:
  - src: 'https://cdnjs.cloudflare.com/ajax/libs/sass.js/0.10.9/sass.sync.min.js'
    raw: true
challengeType: 0
---

## Description
<section id='description'>
The last challenge showed how the <code>@for</code> directive uses a starting and ending value to loop a certain number of times. Sass also offers the <code>@each</code> directive which loops over each item in a list or map.
On each iteration, the variable gets assigned to the current value from the list or map.
<blockquote>@each $color in blue, red, green {<br>&nbsp;&nbsp;.#{$color}-text {color: $color;}<br>}</blockquote>
A map has slightly different syntax. Here's an example:
<blockquote>$colors: (color1: blue, color2: red, color3: green);<br><br>@each $key, $color in $colors {<br>&nbsp;&nbsp;.#{$color}-text {color: $color;}<br>}</blockquote>
Note that the <code>$key</code> variable is needed to reference the keys in the map. Otherwise, the compiled CSS would have <code>color1</code>, <code>color2</code>... in it.
Both of the above code examples are converted into the following CSS:
<blockquote>.blue-text {<br>&nbsp;&nbsp;color: blue;<br>}<br><br>.red-text {<br>&nbsp;&nbsp;color: red;<br>}<br><br>.green-text {<br>&nbsp;&nbsp;color: green;<br>}</blockquote>
</section>

## Instructions
<section id='instructions'>
Write an <code>@each</code> directive that goes through a list: <code>blue, black, red</code> and assigns each variable to a <code>.color-bg</code> class, where the "color" part changes for each item.
Each class should set the <code>background-color</code> the respective color.
</section>

## Tests
<section id='tests'>

```yml
- text: Your code should use the <code>@each</code> directive.
  testString: 'assert(code.match(/@each /g), ''Your code should use the <code>@each</code> directive.'');'
- text: Your <code>.blue-bg</code> class should have a <code>background-color</code> of blue.
  testString: 'assert($(''.blue-bg'').css(''background-color'') == ''rgb(0, 0, 255)'', ''Your <code>.blue-bg</code> class should have a <code>background-color</code> of blue.'');'
- text: Your <code>.black-bg</code> class should have a <code>background-color</code> of black.
  testString: 'assert($(''.black-bg'').css(''background-color'') == ''rgb(0, 0, 0)'', ''Your <code>.black-bg</code> class should have a <code>background-color</code> of black.'');'
- text: Your <code>.red-bg</code> class should have a <code>background-color</code> of red.
  testString: 'assert($(''.red-bg'').css(''background-color'') == ''rgb(255, 0, 0)'', ''Your <code>.red-bg</code> class should have a <code>background-color</code> of red.'');'

```

</section>

## Challenge Seed
<section id='challengeSeed'>

<div id='html-seed'>

```html
<style type='text/sass'>
  
  
  
  div {
    height: 200px;
    width: 200px;
  }
</style>

<div class="blue-bg"></div>
<div class="black-bg"></div>
<div class="red-bg"></div>
```

</div>



</section>

## Solution
<section id='solution'>

```js
// solution required
```
</section>