freeCodeCamp/curriculum/challenges/chinese/01-responsive-web-design/css-flexbox/use-the-flex-grow-property-...

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---
id: 587d78ae367417b2b2512afc
title: Use the flex-grow Property to Expand Items
challengeType: 0
videoUrl: ''
localeTitle: 使用flex-grow属性扩展项目
---
## Description
<section id="description"><code>flex-shrink</code>相反的是<code>flex-grow</code>属性。回想一下,当容器缩小时, <code>flex-shrink</code>控制项目的大小。当父容器展开时, <code>flex-grow</code>属性控制项的大小。使用上一个挑战中的类似示例,如果一个项目的<code>flex-grow</code>值为1而另一个项目的<code>flex-grow</code>值为3则值为3的项目将增长为另一个项目的三倍。 </section>
## Instructions
<section id="instructions">将CSS属性<code>flex-grow</code>添加到<code>#box-1</code><code>#box-2</code> 。将<code>#box-1</code>的值设为1<code>#box-2</code>的值设为2。 </section>
## Tests
<section id='tests'>
```yml
tests:
- text: '<code>#box-1</code>元素应将<code>flex-grow</code>属性设置为值1。'
testString: 'assert($("#box-1").css("flex-grow") == "1", "The <code>#box-1</code> element should have the <code>flex-grow</code> property set to a value of 1.");'
- text: '<code>#box-2</code>元素应将<code>flex-grow</code>属性设置为值2。'
testString: 'assert($("#box-2").css("flex-grow") == "2", "The <code>#box-2</code> element should have the <code>flex-grow</code> property set to a value of 2.");'
```
</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;
}
#box-2 {
background-color: orangered;
height: 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>