HTML is one of the most commonly used markup languages in web design, and centered display is also one of the most basic display methods in web design. This article will introduce how to use HTML to set centered display in web pages.
1. Horizontal centering
1.1 Using the text alignment attribute
You can use the text-align attribute to horizontally center HTML elements. This attribute can be set on a parent element to center its child elements horizontally.
Sample code:
<!doctype html>
<html>
<head>
<style>
.container {
text-align: center;
}
</style>
<head>
<body>
<div class="container">
<p>这是一段文字</p>
</div>
</body>
</html>1.2 Using the margin attribute
You can also use the margin attribute to achieve horizontal centering. Note that this method only works for elements with a fixed width.
Sample code:
<!doctype html>
<html>
<head>
<style>
.container {
width: 500px;
margin: 0 auto;
}
</style>
<head>
<body>
<div class="container">
<p>这是一段文字</p>
</div>
</body>
</html>2. Vertical centering
2.1 Use the text alignment attribute
If you need to achieve vertical centering in the HTML element, add it to the parent element You can set the display: table attribute on the element, and the display: table-cell and vertical-align: middle attributes on the child elements.
Sample code:
<!doctype html>
<html>
<head>
<style>
.container {
display: table;
height: 500px;
width: 100%;
background-color: gray;
}
.inner {
display: table-cell;
vertical-align: middle;
}
</style>
<head>
<body>
<div class="container">
<div class="inner">
<p>这是一段文字</p>
</div>
</div>
</body>
</html>2.2 Using the flex attribute
Another way to achieve vertical centering is to use the flex attribute. Set display: flex on the parent element, and set the align-items: center and justify-content: center properties on the child element to achieve vertical centering.
Sample code:
<!doctype html>
<html>
<head>
<style>
.container {
display: flex;
align-items: center;
justify-content: center;
height: 500px;
width: 100%;
background-color: gray;
}
</style>
<head>
<body>
<div class="container">
<p>这是一段文字</p>
</div>
</body>
</html>Both methods can easily achieve centered display in HTML. It should be noted that when using the margin attribute for horizontal centering, you must specify a fixed width and set the left and right values of the margin attribute to auto to achieve centered display.
Summary:
This article introduces two horizontal centering and two vertical centering methods. The text-align and margin properties are suitable for horizontal centering, while display: table, display: flex and The vertical-align property applies to vertical centering. Either way, centering in HTML is easy.
The above is the detailed content of html settings center display. For more information, please follow other related articles on the PHP Chinese website!
HTML and React's Integration: A Practical GuideApr 21, 2025 am 12:16 AMHTML and React can be seamlessly integrated through JSX to build an efficient user interface. 1) Embed HTML elements using JSX, 2) Optimize rendering performance using virtual DOM, 3) Manage and render HTML structures through componentization. This integration method is not only intuitive, but also improves application performance.
React and HTML: Rendering Data and Handling EventsApr 20, 2025 am 12:21 AMReact efficiently renders data through state and props, and handles user events through the synthesis event system. 1) Use useState to manage state, such as the counter example. 2) Event processing is implemented by adding functions in JSX, such as button clicks. 3) The key attribute is required to render the list, such as the TodoList component. 4) For form processing, useState and e.preventDefault(), such as Form components.
The Backend Connection: How React Interacts with ServersApr 20, 2025 am 12:19 AMReact interacts with the server through HTTP requests to obtain, send, update and delete data. 1) User operation triggers events, 2) Initiate HTTP requests, 3) Process server responses, 4) Update component status and re-render.
React: Focusing on the User Interface (Frontend)Apr 20, 2025 am 12:18 AMReact is a JavaScript library for building user interfaces that improves efficiency through component development and virtual DOM. 1. Components and JSX: Use JSX syntax to define components to enhance code intuitiveness and quality. 2. Virtual DOM and Rendering: Optimize rendering performance through virtual DOM and diff algorithms. 3. State management and Hooks: Hooks such as useState and useEffect simplify state management and side effects handling. 4. Example of usage: From basic forms to advanced global state management, use the ContextAPI. 5. Common errors and debugging: Avoid improper state management and component update problems, and use ReactDevTools to debug. 6. Performance optimization and optimality
React's Role: Frontend or Backend? Clarifying the DistinctionApr 20, 2025 am 12:15 AMReactisafrontendlibrary,focusedonbuildinguserinterfaces.ItmanagesUIstateandupdatesefficientlyusingavirtualDOM,andinteractswithbackendservicesviaAPIsfordatahandling,butdoesnotprocessorstoredataitself.
React in the HTML: Building Interactive User InterfacesApr 20, 2025 am 12:05 AMReact can be embedded in HTML to enhance or completely rewrite traditional HTML pages. 1) The basic steps to using React include adding a root div in HTML and rendering the React component via ReactDOM.render(). 2) More advanced applications include using useState to manage state and implement complex UI interactions such as counters and to-do lists. 3) Optimization and best practices include code segmentation, lazy loading and using React.memo and useMemo to improve performance. Through these methods, developers can leverage the power of React to build dynamic and responsive user interfaces.
React: The Foundation for Modern Frontend DevelopmentApr 19, 2025 am 12:23 AMReact is a JavaScript library for building modern front-end applications. 1. It uses componentized and virtual DOM to optimize performance. 2. Components use JSX to define, state and attributes to manage data. 3. Hooks simplify life cycle management. 4. Use ContextAPI to manage global status. 5. Common errors require debugging status updates and life cycles. 6. Optimization techniques include Memoization, code splitting and virtual scrolling.
The Future of React: Trends and Innovations in Web DevelopmentApr 19, 2025 am 12:22 AMReact's future will focus on the ultimate in component development, performance optimization and deep integration with other technology stacks. 1) React will further simplify the creation and management of components and promote the ultimate in component development. 2) Performance optimization will become the focus, especially in large applications. 3) React will be deeply integrated with technologies such as GraphQL and TypeScript to improve the development experience.
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
Dreamweaver Mac version
Visual web development tools
ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment
SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.
DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
