How to achieve center alignment of elements in a flexible box with CSS-CSS Tutorial-php.cn

Home

Web Front-end

CSS Tutorial

How to achieve center alignment of elements in a flexible box with CSS

藏色散人

Nov 30, 2018 pm 05:25 PM

CSS method to achieve center alignment of elements in a flexible box: first create an HTML sample file; then use the "display:flex;" attribute to make the box have elastic layout attributes; finally, use align- in css Items and other related attributes can be used to achieve the center alignment effect of elements in the flexible box.

How to achieve center alignment of elements in a flexible box with CSS

The operating environment of this article: Windows7 system, HTML5&&CSS3 version, Dell G3 computer.

css implements element alignment (center-aligning the

elements of the flexible box), which is a relatively common functional effect in our web design. We can achieve this through related css attributes such as align-items in css.

Below we will use specific code examples to introduce to you how to achieve center alignment of elements in a flexible box with CSS.

The code example is as follows:

<!DOCTYPE>
<html>
<meta charset="utf-8">
<head>
    <title></title>
    <style type="text/css">
        #xyz {
            width: 200px;
            height: 250px;
            border: 1px solid black;
            display: -webkit-flex; /* Safari */
            -webkit-align-items: center; /* Safari 7.0+ */
            display: flex;
            align-items: center;
        }
        #xyz div {
            -webkit-flex: 1; /* Safari 6.1+ */
            flex: 1;
        }
    </style>

</head>
<body>
<div id="xyz">
    <div style="background-color:#99FF99;">内容1</div>
    <div style="background-color:#33CCFF;">一些文件的内容</div>
    <div style="background-color:#FF99FF;">内容2</div>
</body>
</html>

The effect is as follows:

How to achieve center alignment of elements in a flexible box with CSS

Or change the width to 400px and the background color content , the effect is as follows:

How to achieve center alignment of elements in a flexible box with CSS

In the above code, we must first use the display: flex; attribute to make the box have elastic layout properties.

align-items property Define the alignment of flex items in the direction of the cross axis (vertical axis) of the current row of the flex container.

flex property is used to set or retrieve how the child elements of the flex box model object allocate space.

Set the flex attribute value to 1 means that all child elements of the flexible box model object have the same length.

Set the align-items attribute value to center to indicate that the element is located in the center of the container. The flexbox element is centered on the cross (vertical) axis of the row. (If the size of the row is smaller than the size of the flexbox element, it will overflow the same length in both directions).

Recommended reference: "CSS Tutorial"

This article is about the effect of CSS to achieve center alignment of elements in elastic boxes. It is also very simple. I hope friends who need it Helps!

The above is the detailed content of How to achieve center alignment of elements in a flexible box with CSS. For more information, please follow other related articles on the PHP Chinese website!

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

Demystifying Screen Readers: Accessible Forms & Best PracticesMar 08, 2025 am 09:45 AM

This is the 3rd post in a small series we did on form accessibility. If you missed the second post, check out "Managing User Focus with :focus-visible". In

Create a JavaScript Contact Form With the Smart Forms FrameworkMar 07, 2025 am 11:33 AM

This tutorial demonstrates creating professional-looking JavaScript forms using the Smart Forms framework (note: no longer available). While the framework itself is unavailable, the principles and techniques remain relevant for other form builders.

Adding Box Shadows to WordPress Blocks and ElementsMar 09, 2025 pm 12:53 PM

The CSS box-shadow and outline properties gained theme.json support in WordPress 6.1. Let's look at a few examples of how it works in real themes, and what options we have to apply these styles to WordPress blocks and elements.

Working With GraphQL CachingMar 19, 2025 am 09:36 AM

If you’ve recently started working with GraphQL, or reviewed its pros and cons, you’ve no doubt heard things like “GraphQL doesn’t support caching” or

Making Your First Custom Svelte TransitionMar 15, 2025 am 11:08 AM

The Svelte transition API provides a way to animate components when they enter or leave the document, including custom Svelte transitions.

Comparing the 5 Best PHP Form Builders (And 3 Free Scripts)Mar 04, 2025 am 10:22 AM

This article explores the top PHP form builder scripts available on Envato Market, comparing their features, flexibility, and design. Before diving into specific options, let's understand what a PHP form builder is and why you'd use one. A PHP form

Show, Don't TellMar 16, 2025 am 11:49 AM

How much time do you spend designing the content presentation for your websites? When you write a new blog post or create a new page, are you thinking about