Does flex belong to bootstrap?
Flex layout belongs to bootstrap; flex refers to elastic layout. Bootstrap can control the layout of the page through the flex class. Use ".d-flex" and ".d-inline-flex" to enable the flex layout style , whether you can use flex elastic layout is also the biggest difference between bootstrap3 and bootstrap4.
The operating environment of this tutorial: Windows 10 system, bootstrap version 5, DELL G3 computer
flex belongs to bootstrap
Bootstrap4 controls the layout of the page through the flex class
The biggest difference between Bootstrap 3 and Bootstrap 4 is that Bootstrap 4 uses flexible boxes for layout instead of floats.
Use .d-flex and .d-inline-flex to enable flex layout style;
.flex-row can render child elements The position in the horizontal direction, the default is left and displayed from left to right (1,2,3);
.flex-row-reverse sub-element is positioned horizontally on the right and displayed from left to right (3, 2, 1);
.flex-column realizes the vertical effect of child elements and displays (1, 2, 3) from top to bottom;
.flex-column-reverse realizes the vertical effect of child elements and displays (3, 2, 1) from top to bottom;
.justify-content-start (end, center, between, around) realizes content alignment;
.align-items-start (end, center, baseline, stretch) realizes item alignment;
.align-self-start(end, center, baseline, stretch) achieves single-item alignment;
The example is as follows:
<div class="d-flex flex-row-reverse border border-dark mt-5 justify-content-center">
<div class="p-2 border border-success">
1 </div>
<div class="p-2 border border-success">
2 </div>
<div class="p-2 border border-success">
3 </div>
</div>
<div class="d-flex flex-column-reverse border border-dark mt-5 justify-content-between" style="height: 200px;">
<div class="p-2 border border-success">
1 </div>
<div class="p-2 border border-success">
2 </div>
<div class="p-2 border border-success">
3 </div>
</div>
<div class="d-flex border border-dark mt-5 align-items-baseline" style="height: 200px;">
<div class="p-2 border border-success align-self-center">
1 </div>
<div class="p-2 border border-success">
2 </div>
<div class="p-2 border border-success">
3 </div>
</div>The example is as follows :
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap 实例</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script>
<script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container mt-3">
<h2 id="Flex">Flex</h2>
<p>使用 d-flex 类创建一个弹性盒子容器，并设置三个弹性子元素：</p>
<div class="d-flex p-3 bg-secondary text-white">
<div class="p-2 bg-info">Flex item 1</div>
<div class="p-2 bg-warning">Flex item 2</div>
<div class="p-2 bg-primary">Flex item 3</div>
</div>
</div>
</body>
</html>Output result:
Related recommendations: bootstrap tutorial
The above is the detailed content of Does flex belong to bootstrap?. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1671
14
1428
52
1329
25
1276
29
1256
24
How to use bootstrap in vue
Apr 07, 2025 pm 11:33 PM
Using Bootstrap in Vue.js is divided into five steps: Install Bootstrap. Import Bootstrap in main.js. Use the Bootstrap component directly in the template. Optional: Custom style. Optional: Use plug-ins.
How to get the bootstrap search bar
Apr 07, 2025 pm 03:33 PM
How to use Bootstrap to get the value of the search bar: Determines the ID or name of the search bar. Use JavaScript to get DOM elements. Gets the value of the element. Perform the required actions.
How to do vertical centering of bootstrap
Apr 07, 2025 pm 03:21 PM
Use Bootstrap to implement vertical centering: flexbox method: Use the d-flex, justify-content-center, and align-items-center classes to place elements in the flexbox container. align-items-center class method: For browsers that do not support flexbox, use the align-items-center class, provided that the parent element has a defined height.
How to write split lines on bootstrap
Apr 07, 2025 pm 03:12 PM
There are two ways to create a Bootstrap split line: using the tag, which creates a horizontal split line. Use the CSS border property to create custom style split lines.
How to insert pictures on bootstrap
Apr 07, 2025 pm 03:30 PM
There are several ways to insert images in Bootstrap: insert images directly, using the HTML img tag. With the Bootstrap image component, you can provide responsive images and more styles. Set the image size, use the img-fluid class to make the image adaptable. Set the border, using the img-bordered class. Set the rounded corners and use the img-rounded class. Set the shadow, use the shadow class. Resize and position the image, using CSS style. Using the background image, use the background-image CSS property.
How to set up the framework for bootstrap
Apr 07, 2025 pm 03:27 PM
To set up the Bootstrap framework, you need to follow these steps: 1. Reference the Bootstrap file via CDN; 2. Download and host the file on your own server; 3. Include the Bootstrap file in HTML; 4. Compile Sass/Less as needed; 5. Import a custom file (optional). Once setup is complete, you can use Bootstrap's grid systems, components, and styles to create responsive websites and applications.
How to resize bootstrap
Apr 07, 2025 pm 03:18 PM
To adjust the size of elements in Bootstrap, you can use the dimension class, which includes: adjusting width: .col-, .w-, .mw-adjust height: .h-, .min-h-, .max-h-
How to use bootstrap button
Apr 07, 2025 pm 03:09 PM
How to use the Bootstrap button? Introduce Bootstrap CSS to create button elements and add Bootstrap button class to add button text
