There are two types of box models: W3C and IE box models
The box model includes margin, border, padding, and content
W3C element width = content width
IE's element width = content+padding+border
I personally think that the box model defined by W3C is more reasonable than the box model defined by IE. The
element The width should include border and padding. This is the same as the box in our real life.
W3C also recognized its own problem, so it added a new style box in CSS3- sizing,
contains two attributes content-box and border-box.
content-box: width=content+padding+border
border-box: width=width (width specified by style)
1. For row-level elements, margin-top and margin-bottom are invalid for upper and lower elements, and margin-left and margin-right are valid
2. For adjacent block-level elements, margin-bottom and margin-top value methods
1) All are positive numbers: take the maximum value Distance=Math.max(margin-botton,margin-top)
2) All are negative numbers: take the minimum value Distance=Math.min( margin-botton,margin-top)
3) The top is a positive number and the bottom is a negative number or the top is a negative number and the bottom is a positive number: Addition of positive and negative distances=margin-botton+margin-top
The above is the detailed content of Understanding the box model. For more information, please follow other related articles on the PHP Chinese website!
Is H5 a Shorthand for HTML5? Exploring the DetailsApr 14, 2025 am 12:05 AMH5 is not just the abbreviation of HTML5, it represents a wider modern web development technology ecosystem: 1. H5 includes HTML5, CSS3, JavaScript and related APIs and technologies; 2. It provides a richer, interactive and smooth user experience, and can run seamlessly on multiple devices; 3. Using the H5 technology stack, you can create responsive web pages and complex interactive functions.
H5 and HTML5: Commonly Used Terms in Web DevelopmentApr 13, 2025 am 12:01 AMH5 and HTML5 refer to the same thing, namely HTML5. HTML5 is the fifth version of HTML, bringing new features such as semantic tags, multimedia support, canvas and graphics, offline storage and local storage, improving the expressiveness and interactivity of web pages.
What Does H5 Refer To? Exploring the ContextApr 12, 2025 am 12:03 AMH5referstoHTML5,apivotaltechnologyinwebdevelopment.1)HTML5introducesnewelementsandAPIsforrich,dynamicwebapplications.2)Itsupportsmultimediawithoutplugins,enhancinguserexperienceacrossdevices.3)SemanticelementsimprovecontentstructureandSEO.4)H5'srespo
H5: Tools, Frameworks, and Best PracticesApr 11, 2025 am 12:11 AMThe tools and frameworks that need to be mastered in H5 development include Vue.js, React and Webpack. 1.Vue.js is suitable for building user interfaces and supports component development. 2.React optimizes page rendering through virtual DOM, suitable for complex applications. 3.Webpack is used for module packaging and optimize resource loading.
The Legacy of HTML5: Understanding H5 in the PresentApr 10, 2025 am 09:28 AMHTML5hassignificantlytransformedwebdevelopmentbyintroducingsemanticelements,enhancingmultimediasupport,andimprovingperformance.1)ItmadewebsitesmoreaccessibleandSEO-friendlywithsemanticelementslike,,and.2)HTML5introducednativeandtags,eliminatingthenee
H5 Code: Accessibility and Semantic HTMLApr 09, 2025 am 12:05 AMH5 improves web page accessibility and SEO effects through semantic elements and ARIA attributes. 1. Use, etc. to organize the content structure and improve SEO. 2. ARIA attributes such as aria-label enhance accessibility, and assistive technology users can use web pages smoothly.
Is h5 same as HTML5?Apr 08, 2025 am 12:16 AM"h5" and "HTML5" are the same in most cases, but they may have different meanings in certain specific scenarios. 1. "HTML5" is a W3C-defined standard that contains new tags and APIs. 2. "h5" is usually the abbreviation of HTML5, but in mobile development, it may refer to a framework based on HTML5. Understanding these differences helps to use these terms accurately in your project.
What is the function of H5?Apr 07, 2025 am 12:10 AMH5, or HTML5, is the fifth version of HTML. It provides developers with a stronger tool set, making it easier to create complex web applications. The core functions of H5 include: 1) elements that allow drawing graphics and animations on web pages; 2) semantic tags such as, etc. to make the web page structure clear and conducive to SEO optimization; 3) new APIs such as GeolocationAPI support location-based services; 4) Cross-browser compatibility needs to be ensured through compatibility testing and Polyfill library.
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
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.
MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.
SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.
ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment
