Align-Items vs. Align-Content: When Does \'-Content\' Actually Matter?-CSS Tutorial-php.cn

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Align-Items vs. Align-Content: When Does \'-Content\' Actually Matter?

Barbara Streisand

Oct 31, 2024 am 10:28 AM

Align-Items vs. Align-Content: When Does

Differentiating Align-Items vs. Align-Content in Grid Layout

When working with Grid Layout, understanding the distinction between "justify/align-items" and "justify/align-content" is crucial. This article aims to clarify their differences, particularly regarding the claim that "-content" properties exist due to the scenario where the grid size is smaller than the container.

Defining the Terminology

Grid Container: The parent container of both the grid and grid items, establishing the grid formatting context.
Grid: Intersecting vertical and horizontal lines dividing the container into grid areas containing grid items.
Grid Items: In-flow content boxes within the grid container.

Align-Content vs. Align-Items

Align-Content: Aligns the grid within the container.
Align-Items: Aligns grid items within the grid.

Clarifying the "-Content" Property

The claim that "-content" properties solely exist because the grid might be smaller than the container is misleading. In the provided illustration, the grid is indeed smaller, allowing space for align-content to center the grid vertically and justify-content to right-align it. However, these properties still apply when the grid size equals the container size, albeit without any visual effect due to the absence of extra space.

Specification Summary

justify-self/justify-items: Inline axis alignment for grid items.
align-self/align-items: Block axis alignment for grid items.
justify-content/align-content: Grid alignment within the container when its outer edges don't align with the container content edges.

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