What is css3 flexbox-CSS Tutorial-php.cn

Home

Web Front-end

CSS Tutorial

What is css3 flexbox

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Dec 22, 2021 am 11:57 AM

css

In css3, the flexible box is a layout method that provides a more effective way to allocate space in order to adapt the page to different screen sizes and device types; you can use the display attribute to define the flexible box. The syntax is "display:flex" or "display:inline-flex".

What is css3 flexbox

The operating environment of this tutorial: Windows 10 system, CSS3&&HTML5 version, Dell G3 computer.

What is css3 flexible box

Flexible box is a new layout mode of CSS3.

CSS3 Flexible Box (Flexible Box or flexbox) is a layout method that ensures that elements have appropriate behavior when the page needs to adapt to different screen sizes and device types.

The purpose of introducing the flexible box layout model is to provide a more efficient way to arrange, align and allocate empty space to sub-elements in a container.

The flexible box is composed of a flexible container (Flex container) and a flexible sub-element (Flex item).

A flexible container is defined as a flexible container by setting the value of the display property to flex or inline-flex.

The flexible container contains one or more flexible sub-elements.

Note: The outside of the flexible container and inside the flexible sub-element are rendered normally. The flex box only defines how the flex child elements are laid out within the flex container.

Flexible sub-elements are usually displayed in one line within the flexible box. By default there is only one row per container.

The following elements show the elastic child elements displayed in a row, from left to right:

The example is as follows:

<html>
<head>
<meta charset="utf-8"> 
<title>123</title> 
<style> 
.flex-container {
    display: -webkit-flex;
    display: flex;
    width: 400px;
    height: 250px;
    background-color: lightgrey;
}
.flex-item {
    background-color: cornflowerblue;
    width: 100px;
    height: 100px;
    margin: 10px;
}
</style>
</head>
<body>
<div class="flex-container">
  <div class="flex-item">flex item 1</div>
  <div class="flex-item">flex item 2</div>
  <div class="flex-item">flex item 3</div>  
</div>
</body>
</html>

Output result:
What is css3 flexbox

(Learning video sharing: css video tutorial)

The above is the detailed content of What is css3 flexbox. 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

@keyframes vs CSS Transitions: What is the difference?May 14, 2025 am 12:01 AM

@keyframesandCSSTransitionsdifferincomplexity:@keyframesallowsfordetailedanimationsequences,whileCSSTransitionshandlesimplestatechanges.UseCSSTransitionsforhovereffectslikebuttoncolorchanges,and@keyframesforintricateanimationslikerotatingspinners.

Using Pages CMS for Static Site Content ManagementMay 13, 2025 am 09:24 AM

I know, I know: there are a ton of content management system options available, and while I've tested several, none have really been the one, y'know? Weird pricing models, difficult customization, some even end up becoming a whole &

The Ultimate Guide to Linking CSS Files in HTMLMay 13, 2025 am 12:02 AM

Linking CSS files to HTML can be achieved by using elements in part of HTML. 1) Use tags to link local CSS files. 2) Multiple CSS files can be implemented by adding multiple tags. 3) External CSS files use absolute URL links, such as. 4) Ensure the correct use of file paths and CSS file loading order, and optimize performance can use CSS preprocessor to merge files.

CSS Flexbox vs Grid: a comprehensive reviewMay 12, 2025 am 12:01 AM

Choosing Flexbox or Grid depends on the layout requirements: 1) Flexbox is suitable for one-dimensional layouts, such as navigation bar; 2) Grid is suitable for two-dimensional layouts, such as magazine layouts. The two can be used in the project to improve the layout effect.

How to Include CSS Files: Methods and Best PracticesMay 11, 2025 am 12:02 AM

The best way to include CSS files is to use tags to introduce external CSS files in the HTML part. 1. Use tags to introduce external CSS files, such as. 2. For small adjustments, inline CSS can be used, but should be used with caution. 3. Large projects can use CSS preprocessors such as Sass or Less to import other CSS files through @import. 4. For performance, CSS files should be merged and CDN should be used, and compressed using tools such as CSSNano.

Flexbox vs Grid: should I learn them both?May 10, 2025 am 12:01 AM

Yes,youshouldlearnbothFlexboxandGrid.1)Flexboxisidealforone-dimensional,flexiblelayoutslikenavigationmenus.2)Gridexcelsintwo-dimensional,complexdesignssuchasmagazinelayouts.3)Combiningbothenhanceslayoutflexibilityandresponsiveness,allowingforstructur

Orbital Mechanics (or How I Optimized a CSS Keyframes Animation)May 09, 2025 am 09:57 AM

What does it look like to refactor your own code? John Rhea picks apart an old CSS animation he wrote and walks through the thought process of optimizing it.

CSS Animations: Is it hard to create them?May 09, 2025 am 12:03 AM

CSSanimationsarenotinherentlyhardbutrequirepracticeandunderstandingofCSSpropertiesandtimingfunctions.1)Startwithsimpleanimationslikescalingabuttononhoverusingkeyframes.2)Useeasingfunctionslikecubic-bezierfornaturaleffects,suchasabounceanimation.3)For

See all articles