Web Front-endCSS TutorialWhat\'s the difference between \'align-items\' and \'align-content\' in CSS Grid Layout?
Understanding the Distinction between "align-items" and "align-content" in Grid Layout
The Grid Layout module introduces two sets of properties, "justify/align-items" and "justify/align-content," which play distinct roles in aligning grid items and the grid itself within a grid container.
Grid Terminology Clarification
- Grid Container: The parent container that defines the overall grid space.
- Grid: A structured grid of lines that divides the grid container into grid areas.
- Grid Items: Boxes that contain in-flow content within the grid areas.
Align-items vs. Align-content
The "align-items" and "align-content" properties, as their names suggest, align grid items and the grid, respectively. Specifically:
- justify-content and align-content align the grid tracks within the content box of the grid container.
- justify-self and justify-items align grid items in the inline dimension (horizontal by default).
- align-self and align-items align grid items in the block dimension (vertical by default).
Addressing the Author's Claim
The author's claim that the "-content" properties exist because "sometimes the total size of your grid might be less than the size of its grid container" highlights the following:
- When the grid is smaller than the grid container, there is free space available.
- The "justify-content" and "align-content" properties can utilize this space to align the grid centrally or otherwise within the container.
- In contrast, if the grid size equals the container size, there is no free space, and these alignment properties have no effect.
Illustrations for Clarity
[Image of illustration from W3C showing a grid smaller than its container, with "justify-content" and "align-content" aligning the grid within the container.]
Excerpt from the Specification
For clarity, relevant excerpts from the CSS Grid Layout specification are provided:
- "Grid items can be aligned in the inline dimension by using the justify-self property on the grid item or justify-items property on the grid container."
- "Grid items can also be aligned in the block dimension by using the align-self property on the grid item or align-items property on the grid container."
- "If the grid’s outer edges do not correspond to the grid container’s content edges, the grid tracks are aligned within the content box according to the justify-content and align-content properties on the grid container."
The above is the detailed content of What\'s the difference between \'align-items\' and \'align-content\' in CSS Grid Layout?. For more information, please follow other related articles on the PHP Chinese website!
Demystifying Screen Readers: Accessible Forms & Best PracticesMar 08, 2025 am 09:45 AMThis is the 3rd post in a small series we did on form accessibility. If you missed the second post, check out "Managing User Focus with :focus-visible". In
Create a JavaScript Contact Form With the Smart Forms FrameworkMar 07, 2025 am 11:33 AMThis tutorial demonstrates creating professional-looking JavaScript forms using the Smart Forms framework (note: no longer available). While the framework itself is unavailable, the principles and techniques remain relevant for other form builders.
Adding Box Shadows to WordPress Blocks and ElementsMar 09, 2025 pm 12:53 PMThe CSS box-shadow and outline properties gained theme.json support in WordPress 6.1. Let's look at a few examples of how it works in real themes, and what options we have to apply these styles to WordPress blocks and elements.
Comparing the 5 Best PHP Form Builders (And 3 Free Scripts)Mar 04, 2025 am 10:22 AMThis article explores the top PHP form builder scripts available on Envato Market, comparing their features, flexibility, and design. Before diving into specific options, let's understand what a PHP form builder is and why you'd use one. A PHP form
Working With GraphQL CachingMar 19, 2025 am 09:36 AMIf you’ve recently started working with GraphQL, or reviewed its pros and cons, you’ve no doubt heard things like “GraphQL doesn’t support caching” or
Making Your First Custom Svelte TransitionMar 15, 2025 am 11:08 AMThe Svelte transition API provides a way to animate components when they enter or leave the document, including custom Svelte transitions.
Show, Don't TellMar 16, 2025 am 11:49 AMHow much time do you spend designing the content presentation for your websites? When you write a new blog post or create a new page, are you thinking about
Classy and Cool Custom CSS Scrollbars: A ShowcaseMar 10, 2025 am 11:37 AMIn this article we will be diving into the world of scrollbars. I know, it doesn’t sound too glamorous, but trust me, a well-designed page goes hand-in-hand
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)
SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.
Atom editor mac version download
The most popular open source editor
mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
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.
