Closed
Bug 1923758
Opened 14 days ago
Closed 13 days ago
Implement support for `anchor()`
Categories
(Core :: CSS Parsing and Computation, enhancement)
Core
CSS Parsing and Computation
Tracking
()
RESOLVED
DUPLICATE
of bug 1909332
People
(Reporter: dshin, Unassigned)
References
(Blocks 1 open bug)
Details
anchor() resolves to <length>, offsetting w.r.t. the anchor element, depending on the keyword specified.
e.g. left: anchor(--foo left); top: anchor(--foo bottom); is akin to position-anchor: --foo; position-area: bottom center, positioning-wise.
Note that the function, unlike position-area:
- Allows referring to an anchor other than its default anchor.
- Has no impact on sizing.
- Can specify percentage value, e.g.
anchor(20%)resolves 20% from the start of the default anchor. This can allow the query element to "escape" its containing block.
The function can also specify a fallback of type <length-percentage> as per spec; however, if this will also allow recursive anchor() is currently debated.
The function can be also used in calc().
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Reporter | |
Updated•14 days ago
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Reporter | |
Updated•13 days ago
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Description
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