How deeply does Web Design Playground cover alignment keywords?

Explains center through axis-based placement and declarations, while stopping short of detailed layout internals.

Alignment keywords

A CSS alignment keyword that places content or a gradient origin at the midpoint of the available space.

Alignment keywords tell a CSS Flexbox container where to place its items. The center value gathers them in the middle instead of at the start or end. section 12.2

Choose the property that matches the direction you want to control:

Use justify-content to arrange items along the main axis. section 12.2
Use align-items to arrange items along the cross axis. section 12.2
Set the value to center when the items belong in the middle of that axis. section 12.2

Center a row of items

container { display: flex; justify-content: center; } This places the flex items in the middle along the container's main axis. To center them along the cross axis too, add align-items: center.

How Web Design Playground covers it

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Related concepts

align-itemsused by · The CSS align-items property specifies how items are aligned along a container’s cross axis in flexbox and grid layouts.
justify-contentused by · The CSS justify-content property distributes flex items or grid tracks along the relevant container axis when free space is available.
text-alignequivalent to · The CSS text-align property specifies the alignment of inline content within a line box or block container.
digital imageaddresses · A digital image is visual content encoded as data, typically as a two-dimensional arrangement of pixels or equivalent visual elements.
headinguses · A heading is a textual or semantic label that introduces a section of content and, when structured, indicates its level in the document hierarchy.

This explainer was generated by Manning's knowledge graph from the text of Web Design Playground. The section links point to the parts of the book it draws on.