This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
|Applies to||all elements|
|Computed value||as specified|
|Canonical order||the unique non-ambiguous order defined by the formal grammar|
tb | rl | bt | lr
Not part of any specification.
In vertical layout, text lines are rotated 90° clockwise. Images are not rotated, but tables are. Box layout in vertical orientations is exactly analogous to layout in the horizontal orientation: width, height, top, bottom, right, and left do not rotate with the text.
Only one block progression is active at a time; these values cannot be combined.
This property is based on the
block-progression property of the CSS3 Text Layout module.
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