Open Bug 1789477 Opened 3 years ago Updated 5 days ago

[css-sizing-4] Implement `stretch` keyword for sizing properties

Categories

(Core :: CSS Parsing and Computation, enhancement)

Product:
Core
Component:
CSS Parsing and Computation
Type:
enhancement

Tracking

()

Project Flags:
Size Estimate M

People

(Reporter: sebo, Unassigned)

References

(Depends on 9 open bugs, Blocks 18 open bugs,
URL
)

Details

(4 keywords, Whiteboard: [platform-feature][webcompat:risk-high])

User Story

platform-scheduled:2025-12-30
web-feature: stretch
user-impact-score:62.5

The CSS Box Sizing Module Level 4 defines a new keyword stretch for sizing properties. This keyword applies stretch-fit sizing to a box so that it fits the size of its containing block.

This issue is meant to implement this keyword.

Sebastian

See Also: → 1789481
Depends on: 1909773
Depends on: 1920633
Depends on: 1920634
Depends on: 1932993
Depends on: 1933408
No longer blocks: 1933288
Depends on: 1933288
Depends on: 1933554
Depends on: 1933566
Depends on: 1933596
Depends on: 1933604
Depends on: 1936942
Depends on: 1937275
Duplicate of this bug: 1495868
Depends on: 1937624
Blocks: 1936444
Blocks: 1938258
No longer blocks: 1940370
Depends on: 1940370
Blocks: 1952838
No longer depends on: 1952838
User Story: (updated)
User Story: (updated)
Depends on: 1967716
Depends on: 1970026
Depends on: 1989365
Whiteboard: [platform-feature][webcompat:risk-high]
User Story: (updated)
User Story: (updated)
User Story: (updated)
Size Estimate: --- → M
Depends on: 2000035

[moving "Firefox fails WPT [...]"-style bugs to depend on this bug rather than blocking it, since generally those are cases where the test will just start passing when we enable this feature]

Blocks: 1928752, 1929290, 1929392, 1932993, 1967716, 1970026
No longer depends on: 1928752, 1929290, 1929392, 1932993, 1967716, 1970026
User Story: (updated)
User Story: (updated)
No longer blocks: 1952838
User Story: (updated)

This feature is now available in Safari 27 beta so it would be wonderful if Firefox could also ship.

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