58 lines
1.2 KiB
Markdown
58 lines
1.2 KiB
Markdown
|
---
|
|||
|
id: 587d78a3367417b2b2512ad0
|
|||
|
title: Center an Element Horizontally Using the margin Property
|
|||
|
challengeType: 0
|
|||
|
videoUrl: ''
|
|||
|
localeTitle: 使用margin属性水平居中元素
|
|||
|
---
|
|||
|
|
|||
|
## Description
|
|||
|
<section id="description">另一种定位技术是将块元素水平居中。一种方法是将其<code>margin</code>设置为auto值。此方法也适用于图像。默认情况下,图像是内联元素,但在将<code>display</code>属性设置为block时可以更改为块元素。 </section>
|
|||
|
|
|||
|
## Instructions
|
|||
|
<section id="instructions">居中的<code>div</code>通过添加在页面上<code>margin</code>属性与汽车的价值。 </section>
|
|||
|
|
|||
|
## Tests
|
|||
|
<section id='tests'>
|
|||
|
|
|||
|
```yml
|
|||
|
tests:
|
|||
|
- text: <code>div</code>应该有一个设置为auto的<code>margin</code> 。
|
|||
|
testString: 'assert(code.match(/margin:\s*?auto;/g), "The <code>div</code> should have a <code>margin</code> set to auto.");'
|
|||
|
|
|||
|
```
|
|||
|
|
|||
|
</section>
|
|||
|
|
|||
|
## Challenge Seed
|
|||
|
<section id='challengeSeed'>
|
|||
|
|
|||
|
<div id='html-seed'>
|
|||
|
|
|||
|
```html
|
|||
|
<style>
|
|||
|
div {
|
|||
|
background-color: blue;
|
|||
|
height: 100px;
|
|||
|
width: 100px;
|
|||
|
|
|||
|
}
|
|||
|
</style>
|
|||
|
<div></div>
|
|||
|
|
|||
|
```
|
|||
|
|
|||
|
</div>
|
|||
|
|
|||
|
|
|||
|
|
|||
|
</section>
|
|||
|
|
|||
|
## Solution
|
|||
|
<section id='solution'>
|
|||
|
|
|||
|
```js
|
|||
|
// solution required
|
|||
|
```
|
|||
|
</section>
|