freeCodeCamp/curriculum/challenges/chinese/01-responsive-web-design/css-flexbox/use-display-flex-to-positio...

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---
id: 587d78ab367417b2b2512af0
title: 'Use display: flex to Position Two Boxes'
challengeType: 0
videoUrl: ''
localeTitle: 使用displayflex定位两个Box
---
## Description
<section id="description">本节使用交替挑战样式来展示如何使用CSS以灵活的方式定位元素。首先挑战将解释理论然后使用简单推文组件的实际挑战将应用flexbox概念。放置CSS属性<code>display: flex;</code>在元素上允许您使用其他flex属性来构建响应式页面。 </section>
## Instructions
<section id="instructions">将CSS属性<code>display</code>添加到<code>#box-container</code>并将其值设置为flex。 </section>
## Tests
<section id='tests'>
```yml
tests:
- text: '<code>#box-container</code>应将<code>display</code>属性设置为flex值。'
testString: 'assert($("#box-container").css("display") == "flex", "<code>#box-container</code> should have the <code>display</code> property set to a value of flex.");'
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='html-seed'>
```html
<style>
#box-container {
height: 500px;
}
#box-1 {
background-color: dodgerblue;
width: 50%;
height: 50%;
}
#box-2 {
background-color: orangered;
width: 50%;
height: 50%;
}
</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>