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CSS Grid Layout is a two-dimensional layout method enabling the laying out of content in rows and columns. Therefore in any grid we have two axes. The block or column axis, and the inline or row axis.

It is along these axes that items can be aligned and justified using the properties defined in the Box Alignment specification.

In CSS the block or column axis is the axis used when laying out blocks of text. If you have two paragraphs and are working in a right to left, top to bottom language they lay out one below the other, on the block axis.

Diagram showing the block axis in CSS Grid Layout.

The inline or row axis runs across the Block Axis and is the direction along which regular text flows. These are our rows in CSS Grid Layout.

Diagram showing the inline axis in CSS Grid Layout.

The physical direction of these axes can change according to the writing mode of the document.

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 Contributors to this page: teoli, rachelandrew
 Last updated by: teoli,