《Web开发中让盒子居中的几种方法》-HTML Tutorial-php.cn

Home

Web Front-end

HTML Tutorial

《Web开发中让盒子居中的几种方法》

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Jun 20, 2016 am 08:42 AM

一、记录下几种盒子居中的方法：

1.0、margin固定宽高居中；

2.0、负margin居中；

3.0、绝对定位居中；

4.0、table-cell居中；

5.0、flex居中；

6.0、transform居中；

7.0、不确定宽高居中(绝对定位百分数)；

8.0、button居中。

二、代码演示(html使用同一个Demo)：

html Demo：

<span style="color: #0000ff;"><span style="color: #800000;">body</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">id</span><span style="color: #0000ff;">="container"</span><span style="color: #0000ff;">></span>
        <span style="color: #0000ff;"><span style="color: #800000;">div </span><span style="color: #ff0000;">id</span><span style="color: #0000ff;">="box"</span><span style="color: #0000ff;">></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></span><span style="color: #800000;">body</span><span style="color: #0000ff;">></span></span></span></span>

1.0、margin固定宽高居中(演示)

这种定位方法纯粹是靠宽高和margin拼出来的，不是很灵活。

CSS：

<span style="color: #800000;">#container </span>{<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 600px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 500px</span>;<span style="color: #ff0000;">
    border</span>:<span style="color: #0000ff;"> 1px solid #000</span>;<span style="color: #ff0000;">
    margin</span>:<span style="color: #0000ff;"> auto</span>;
}<span style="color: #800000;">
#box </span>{<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 200px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 200px</span>;<span style="color: #ff0000;">
    margin</span>:<span style="color: #0000ff;"> 150px 200px</span>;<span style="color: #ff0000;">
    background-color</span>:<span style="color: #0000ff;"> #0ff</span>;
}

2.0、负margin居中(演示)

利用负的margin来进行居中，需要知道固定宽高，限制比较大。

CSS:

<span style="color: #800000;">#container </span>{<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;"> relative</span>;<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 600px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 500px</span>;<span style="color: #ff0000;">
    border</span>:<span style="color: #0000ff;"> 1px solid #000</span>;<span style="color: #ff0000;">
    margin</span>:<span style="color: #0000ff;"> auto</span>;
}<span style="color: #800000;">
#box </span>{<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;"> absolute</span>;<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 200px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 200px</span>;<span style="color: #ff0000;">
    left</span>:<span style="color: #0000ff;"> 50%</span>;<span style="color: #ff0000;">
    top</span>:<span style="color: #0000ff;"> 50%</span>;<span style="color: #ff0000;">
    margin</span>:<span style="color: #0000ff;"> -100px -100px</span>;<span style="color: #ff0000;">
    background-color</span>:<span style="color: #0000ff;"> #0ff</span>;
}

3.0、绝对定位居中(演示)

利用绝对定位居中，非常常用的一种方法。

CSS:

<span style="color: #800000;">#container </span>{<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;"> relative</span>;<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 600px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 500px</span>;<span style="color: #ff0000;">
    border</span>:<span style="color: #0000ff;"> 1px solid #000</span>;<span style="color: #ff0000;">
    margin</span>:<span style="color: #0000ff;"> auto</span>;
}<span style="color: #800000;">
#box </span>{<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;"> absolute</span>;<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 200px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 200px</span>;<span style="color: #ff0000;">
    left</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;">
    top</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;">
    right</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;">
    bottom</span>:<span style="color: #0000ff;"> 0</span>;<span style="color: #ff0000;">
    margin</span>:<span style="color: #0000ff;"> auto</span>;<span style="color: #ff0000;">
    background-color</span>:<span style="color: #0000ff;"> #0ff</span>;
}

4.0、table-cell居中(演示)

利用table-cell来控制垂直居中。

CSS:

<span style="color: #800000;">#container </span>{<span style="color: #ff0000;">
    display</span>:<span style="color: #0000ff;"> table-cell</span>;<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 600px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 500px</span>;<span style="color: #ff0000;">
    vertical-align</span>:<span style="color: #0000ff;"> middle</span>;<span style="color: #ff0000;">
    border</span>:<span style="color: #0000ff;"> 1px solid #000</span>;
}<span style="color: #800000;">
#box </span>{<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 200px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 200px</span>;<span style="color: #ff0000;">
    margin</span>:<span style="color: #0000ff;"> 0 auto</span>;<span style="color: #ff0000;">
    background-color</span>:<span style="color: #0000ff;"> #0ff</span>;
}

5.0、flex居中(演示)

CSS3中引入的新布局方式，比较好用。缺点：IE9以及IE9一下不兼容。

CSS:

<span style="color: #800000;">#container </span>{<span style="color: #ff0000;">
    display</span>:<span style="color: #0000ff;"> -webkit-flex</span>;<span style="color: #ff0000;">
    display</span>:<span style="color: #0000ff;"> flex</span>;<span style="color: #ff0000;">
    -webkit-align-items</span>:<span style="color: #0000ff;"> center</span>;<span style="color: #ff0000;">
            align-items</span>:<span style="color: #0000ff;"> center</span>;<span style="color: #ff0000;">
    -webkit-justify-content</span>:<span style="color: #0000ff;"> center</span>;<span style="color: #ff0000;">
            justify-content</span>:<span style="color: #0000ff;"> center</span>;<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 600px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 500px</span>;<span style="color: #ff0000;">
    border</span>:<span style="color: #0000ff;"> 1px solid #000</span>;<span style="color: #ff0000;">
    margin</span>:<span style="color: #0000ff;"> auto</span>;
}<span style="color: #800000;">
#box </span>{<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 200px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 200px</span>;<span style="color: #ff0000;">
    background-color</span>:<span style="color: #0000ff;"> #0ff</span>;
}

6.0、transform居中(演示)

这种方法灵活运用CSS中transform属性，较为新奇。缺点是IE9下不兼容。

CSS:

<span style="color: #800000;">#container </span>{<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;"> relative</span>;<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 600px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 600px</span>;<span style="color: #ff0000;">
    border</span>:<span style="color: #0000ff;"> 1px solid #000</span>;<span style="color: #ff0000;">
    margin</span>:<span style="color: #0000ff;"> auto</span>;
}<span style="color: #800000;">
#box </span>{<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;"> relative</span>;<span style="color: #ff0000;">
    top</span>:<span style="color: #0000ff;"> 50%</span>;<span style="color: #ff0000;">
    left</span>:<span style="color: #0000ff;"> 50%</span>;<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 200px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 200px</span>;<span style="color: #ff0000;">
    transform</span>:<span style="color: #0000ff;"> translate(-50%, -50%)</span>;<span style="color: #ff0000;">
    -webkit-transform</span>:<span style="color: #0000ff;"> translate(-50%, -50%)</span>;<span style="color: #ff0000;">
    -ms-transform</span>:<span style="color: #0000ff;"> translate(-50%, -50%)</span>;<span style="color: #ff0000;">
    -moz-transform</span>:<span style="color: #0000ff;"> translate(-50%, -50%)</span>;<span style="color: #ff0000;">
    background-color</span>:<span style="color: #0000ff;"> #0ff</span>;
}

7.0、不确定宽高居中(绝对定位百分数)(演示)

这种不确定宽高的居中，较为灵活。只需要保证left和right的百分数一样就可以实现水平居中，保证top和bottom的百分数一样就可以实现垂直居中。

CSS:

<span style="color: #800000;">#container </span>{<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;"> relative</span>;<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 600px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 500px</span>;<span style="color: #ff0000;">
    border</span>:<span style="color: #0000ff;"> 1px solid #000</span>;<span style="color: #ff0000;">
    margin</span>:<span style="color: #0000ff;"> auto</span>;
}<span style="color: #800000;">
#box </span>{<span style="color: #ff0000;">
    position</span>:<span style="color: #0000ff;"> absolute</span>;<span style="color: #ff0000;">
    left</span>:<span style="color: #0000ff;"> 30%</span>;<span style="color: #ff0000;">
    right</span>:<span style="color: #0000ff;"> 30%</span>;<span style="color: #ff0000;">
    top</span>:<span style="color: #0000ff;"> 25%</span>;<span style="color: #ff0000;">
    bottom</span>:<span style="color: #0000ff;"> 25%</span>;<span style="color: #ff0000;">
    background-color</span>:<span style="color: #0000ff;"> #0ff</span>;
}

8.0、button居中(演示)

利用button做外容器，里边的块元素会自动垂直居中，只需要控制一下水平居中就可以达到效果。

HTML：

<span style="color: #0000ff;"><span style="color: #800000;">button</span><span style="color: #0000ff;">></span>
    <span style="color: #0000ff;"><span style="color: #800000;">div</span><span style="color: #0000ff;">></span><span style="color: #800000;">div</span><span style="color: #0000ff;">></span>
<span style="color: #0000ff;"></span><span style="color: #800000;">button</span><span style="color: #0000ff;">></span></span></span>

CSS：

<span style="color: #800000;">button </span>{<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 600px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 500px</span>;<span style="color: #ff0000;">
    border</span>:<span style="color: #0000ff;"> 1px solid #000</span>;
}<span style="color: #800000;">
div </span>{<span style="color: #ff0000;">
    width</span>:<span style="color: #0000ff;"> 200px</span>;<span style="color: #ff0000;">
    height</span>:<span style="color: #0000ff;"> 200px</span>;<span style="color: #ff0000;">
    margin</span>:<span style="color: #0000ff;"> 0 auto</span>;<span style="color: #ff0000;">
    background-color</span>:<span style="color: #0000ff;"> #0ff</span>;
}

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Difficulty in updating caching of official account web pages: How to avoid the old cache affecting the user experience after version update?Mar 04, 2025 pm 12:32 PM

The official account web page update cache, this thing is simple and simple, and it is complicated enough to drink a pot of it. You worked hard to update the official account article, but the user still opened the old version. Who can bear the taste? In this article, let’s take a look at the twists and turns behind this and how to solve this problem gracefully. After reading it, you can easily deal with various caching problems, allowing your users to always experience the freshest content. Let’s talk about the basics first. To put it bluntly, in order to improve access speed, the browser or server stores some static resources (such as pictures, CSS, JS) or page content. Next time you access it, you can directly retrieve it from the cache without having to download it again, and it is naturally fast. But this thing is also a double-edged sword. The new version is online,

How do I use HTML5 form validation attributes to validate user input?Mar 17, 2025 pm 12:27 PM

The article discusses using HTML5 form validation attributes like required, pattern, min, max, and length limits to validate user input directly in the browser.

How to efficiently add stroke effects to PNG images on web pages?Mar 04, 2025 pm 02:39 PM

This article demonstrates efficient PNG border addition to webpages using CSS. It argues that CSS offers superior performance compared to JavaScript or libraries, detailing how to adjust border width, style, and color for subtle or prominent effect

What are the best practices for cross-browser compatibility in HTML5?Mar 17, 2025 pm 12:20 PM

Article discusses best practices for ensuring HTML5 cross-browser compatibility, focusing on feature detection, progressive enhancement, and testing methods.

What is the purpose of the <datalist> element?Mar 21, 2025 pm 12:33 PM

The article discusses the HTML <datalist> element, which enhances forms by providing autocomplete suggestions, improving user experience and reducing errors.Character count: 159

What is the purpose of the <meter> element?Mar 21, 2025 pm 12:35 PM

The article discusses the HTML <meter> element, used for displaying scalar or fractional values within a range, and its common applications in web development. It differentiates <meter> from <progress> and ex

How do I use the HTML5 <time> element to represent dates and times semantically?Mar 12, 2025 pm 04:05 PM

This article explains the HTML5 <time> element for semantic date/time representation. It emphasizes the importance of the datetime attribute for machine readability (ISO 8601 format) alongside human-readable text, boosting accessibilit

What is the purpose of the <progress> element?Mar 21, 2025 pm 12:34 PM

The article discusses the HTML <progress> element, its purpose, styling, and differences from the <meter> element. The main focus is on using <progress> for task completion and <meter> for stati

See all articles