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Nicholas Carrigan (he/him) 3da4be21bb chore: seed chinese traditional (#42005)
Seeds the chinese traditional files manually so we can deploy to
staging.
2021-05-05 22:43:49 +05:30

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---
id: 587d78ae367417b2b2512aff
title: 使用 order 屬性重新排列子元素
challengeType: 0
videoUrl: 'https://scrimba.com/p/pVaDAv/cMbvNAG'
forumTopicId: 301116
dashedName: use-the-order-property-to-rearrange-items
---
# --description--
`order` 屬性告訴 CSS flex 容器裏子元素的順序。 默認情況下,項目排列順序與源 HTML 文件中順序相同。 這個屬性接受數字作爲參數,可以使用負數。
# --instructions--
請給 `#box-1``#box-2` 添加 CSS 屬性 `order` 並將 `#box-1` 的屬性值設爲 `2``#box-2` 的屬性值設爲 `1`
# --hints--
`#box-1` 元素應具有 `order` 屬性,其屬性值應爲 `2`
```js
assert($('#box-1').css('order') == '2');
```
`#box-2` 元素應具有 `order` 屬性,其屬性值應爲 `1`
```js
assert($('#box-2').css('order') == '1');
```
# --seed--
## --seed-contents--
```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>
```
# --solutions--
```html
<style>
#box-container {
display: flex;
height: 500px;
}
#box-1 {
background-color: dodgerblue;
order: 2;
height: 200px;
width: 200px;
}
#box-2 {
background-color: orangered;
order: 1;
height: 200px;
width: 200px;
}
</style>
<div id="box-container">
<div id="box-1"></div>
<div id="box-2"></div>
</div>
```