亚洲国产日韩欧美一区二区三区,精品亚洲国产成人av在线,国产99视频精品免视看7,99国产精品久久久久久久成人热,欧美日韩亚洲国产综合乱

Table of Contents
Causes and solutions for CSS negative margin failure
Home Web Front-end CSS Tutorial Why do negative margins not take effect in some cases?

Why do negative margins not take effect in some cases?

Apr 05, 2025 pm 04:09 PM
css Browser tool Solution css layout Why

Why do negative margins not take effect in some cases?

Causes and solutions for CSS negative margin failure

Negative margins are a powerful tool in CSS layouts, but sometimes it may not work as expected. This article will analyze common causes of negative margin failure and provide corresponding solutions.

A developer has encountered a problem when using negative margins: When the parent element is 100%, the child elements (for example, blue and pink divs) cannot overlap; but when the parent element is 70%, the child elements successfully overlap by setting the negative margins.

The key to this difference lies in the actual width of the child elements. When the parent element width is 100%, the child element also occupies 100% of the width. However, if the child element contains a border or padding, its actual width will exceed 100%. If this actual width is greater than the value of the negative margin, the negative margin will be offset and the effect looks like it has failed.

When the parent element width is 70%, the width of the child element also decreases accordingly. At this time, the actual width of the child element (including borders and inner margins) may be less than or equal to the value of the negative margins, so the negative margins can effectively overlap the child elements.

Summary: The fundamental reason for negative margin failure is that the actual width of the child element is greater than the negative margin value. To ensure that negative margins take effect, developers need to consider the following factors:

  • Border-width: The border increases the actual width of the element.
  • padding: The padding also increases the actual width of the element.
  • Actual width of child elements: When calculating the actual width of a child element, be sure to include borders and inner margins.
  • Value of negative margin: Ensure that the value of negative margin is greater than or equal to the sum of the actual width of the child element and the expected overlap distance.

By carefully calculating the actual width of the element and adjusting the value of the negative margin, the problem of negative margin failure can be effectively avoided, thereby achieving the expected layout effect. It is recommended to use browser developer tools to check the actual width of elements to assist in debugging.

The above is the detailed content of Why do negative margins not take effect in some cases?. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
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

Hot AI Tools

Undress AI Tool

Undress AI Tool

Undress images for free

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

PHP Tutorial
1488
72
btc trading platform latest version app download 5.0.5 btc trading platform official website APP download link btc trading platform latest version app download 5.0.5 btc trading platform official website APP download link Aug 01, 2025 pm 11:30 PM

1. First, ensure that the device network is stable and has sufficient storage space; 2. Download it through the official download address [adid]fbd7939d674997cdb4692d34de8633c4[/adid]; 3. Complete the installation according to the device prompts, and the official channel is safe and reliable; 4. After the installation is completed, you can experience professional trading services comparable to HTX and Ouyi platforms; the new version 5.0.5 feature highlights include: 1. Optimize the user interface, and the operation is more intuitive and convenient; 2. Improve transaction performance and reduce delays and slippages; 3. Enhance security protection and adopt advanced encryption technology; 4. Add a variety of new technical analysis chart tools; pay attention to: 1. Properly keep the account password to avoid logging in on public devices; 2.

Binance new version download, the most complete tutorial on installing and downloading (ios/Android) Binance new version download, the most complete tutorial on installing and downloading (ios/Android) Aug 01, 2025 pm 07:00 PM

First, download the Binance App through the official channel to ensure security. 1. Android users should visit the official website, confirm that the URL is correct, download the Android installation package, and enable the "Allow to install applications from unknown sources" permission in the browser. It is recommended to close the permission after completing the installation. 2. Apple users need to use a non-mainland Apple ID (such as the United States or Hong Kong), log in to the ID in the App Store and search and download the official "Binance" application. After installation, you can switch back to the original Apple ID. 3. Be sure to enable two-factor verification (2FA) after downloading and keep the application updated to ensure account security. The entire process must be operated through official channels to avoid clicking unknown links.

USDT virtual currency account activation guide USDT digital asset registration tutorial USDT virtual currency account activation guide USDT digital asset registration tutorial Aug 01, 2025 pm 11:36 PM

First, choose a reputable digital asset platform. 1. Recommend mainstream platforms such as Binance, Ouyi, Huobi, Damen Exchange; 2. Visit the official website and click "Register", use your email or mobile phone number and set a high-strength password; 3. Complete email or mobile phone verification code verification; 4. After logging in, perform identity verification (KYC), submit identity proof documents and complete facial recognition; 5. Enable two-factor identity verification (2FA), set an independent fund password, and regularly check the login record to ensure the security of the account, and finally successfully open and manage the USDT virtual currency account.

USDT virtual currency purchase process USDT transaction detailed complete guide USDT virtual currency purchase process USDT transaction detailed complete guide Aug 01, 2025 pm 11:33 PM

First, choose a reputable trading platform such as Binance, Ouyi, Huobi or Damen Exchange; 1. Register an account and set a strong password; 2. Complete identity verification (KYC) and submit real documents; 3. Select the appropriate merchant to purchase USDT and complete payment through C2C transactions; 4. Enable two-factor identity verification, set a capital password and regularly check account activities to ensure security. The entire process needs to be operated on the official platform to prevent phishing, and finally complete the purchase and security management of USDT.

Ouyi app download and trading website Ouyi exchange app official version v6.129.0 download website Ouyi app download and trading website Ouyi exchange app official version v6.129.0 download website Aug 01, 2025 pm 11:27 PM

Ouyi APP is a professional digital asset service platform dedicated to providing global users with a safe, stable and efficient trading experience. This article will introduce in detail the download method and core functions of its official version v6.129.0 to help users get started quickly. This version has been fully upgraded in terms of user experience, transaction performance and security, aiming to meet the diverse needs of users at different levels, allowing users to easily manage and trade their digital assets.

How to use the CSS backdrop-filter property? How to use the CSS backdrop-filter property? Aug 02, 2025 pm 12:11 PM

Backdrop-filter is used to apply visual effects to the content behind the elements. 1. Use backdrop-filter:blur(10px) and other syntax to achieve the frosted glass effect; 2. Supports multiple filter functions such as blur, brightness, contrast, etc. and can be superimposed; 3. It is often used in glass card design, and it is necessary to ensure that the elements overlap with the background; 4. Modern browsers have good support, and @supports can be used to provide downgrade solutions; 5. Avoid excessive blur values and frequent redrawing to optimize performance. This attribute only takes effect when there is content behind the elements.

yandex web version entrance How to download Binance yandex safe download Binance yandex web version entrance How to download Binance yandex safe download Binance Aug 01, 2025 pm 06:27 PM

When using Yandex to find the official Binance channel, you must accurately locate the official website by searching for "Binance Official Website" or "Binance Official Website"; 2. After entering the official website, find the "Download" or "App" entrance in the header or footer, and follow the official guidelines to download or obtain the officially verified installation files through the app store; 3. Avoid clicking on advertisements or third-party links throughout the process, ensure that the domain name is correct and the link is trustworthy, so as to ensure the download security.

Why are everyone buying stablecoins? Analysis of market trends in 2025 Why are everyone buying stablecoins? Analysis of market trends in 2025 Aug 01, 2025 pm 06:45 PM

Stablecoins are highly favored for their stable value, safe-haven attributes and a wide range of application scenarios. 1. When the market fluctuates violently, stablecoins can serve as a safe haven to help investors lock in profits or avoid losses; 2. As an efficient trading medium, stablecoins connect fiat currency and the crypto world, with fast transaction speeds and low handling fees, and support rich trading pairs; 3. It is the cornerstone of decentralized finance (DeFi).

See all articles