freeCodeCamp/curriculum/challenges/chinese/01-responsive-web-design/css-flexbox/use-the-order-property-to-r...

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---
id: 587d78ae367417b2b2512aff
title: Use the order Property to Rearrange Items
challengeType: 0
videoUrl: ''
localeTitle: 使用order属性重新排列项目
---
## Description
<section id="description"> <code>order</code>属性用于告诉CSS Flex项目在Flex容器中的显示顺序。默认情况下项目将以与源HTML相同的顺序显示。该属性将数字作为值可以使用负数。 </section>
## Instructions
<section id="instructions">将CSS属性<code>order</code>添加到<code>#box-1</code><code>#box-2</code> 。给<code>#box-1</code>一个值2<code>#box-2</code>一个值1。 </section>
## Tests
<section id='tests'>
```yml
tests:
- text: '<code>#box-1</code>元素的<code>order</code>属性应设置为值2。'
testString: 'assert($("#box-1").css("order") == "2", "The <code>#box-1</code> element should have the <code>order</code> property set to a value of 2.");'
- text: '<code>#box-2</code>元素应该将<code>order</code>属性设置为值1。'
testString: 'assert($("#box-2").css("order") == "1", "The <code>#box-2</code> element should have the <code>order</code> property set to a value of 1.");'
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='html-seed'>
```html
<style>
#box-container {
display: flex;
height: 500px;
}
#box-1 {
background-color: dodgerblue;
height: 200px;
width: 200px;
}
#box-2 {
background-color: orangered;
height: 200px;
width: 200px;
}
</style>
<div id="box-container">
<div id="box-1"></div>
<div id="box-2"></div>
</div>
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
</section>