Bug 252357

Summary: [rhythmic-sizing] Implement layout logic for block-step-size
Product: WebKit Reporter: Sammy Gill <sgill26>
Component: Layout and RenderingAssignee: Nobody <webkit-unassigned>
Status: NEW ---    
Severity: Normal CC: bfulgham, sebastianzartner, simon.fraser, webkit-bug-importer, zalan
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Bug Depends on: 252672, 252874, 253105, 253106, 252358    
Bug Blocks: 167333    

Description Sammy Gill 2023-02-15 15:37:36 PST 
https://drafts.csswg.org/css-rhythm/#block-step-size

This property defines the step unit for a block-level box’s block size. When the step unit is set to a positive <length>, the box’s outer height is rounded (see block-step-round) to the closest multiple of the unit. Negative <length> values are invalid.

Values other than none cause the box to establish an independent formatting context.

In situations where margins collapse, only the box’s own margin is considered in calculating its outer size.

When a box fragments, step sizing is applied per fragment.
Comment 1 Radar WebKit Bug Importer 2023-02-15 15:37:57 PST 
<rdar://problem/105519481>