Bug 251154 – [margin-trim] Add margin-trim support for floats in IFC line layout

• Status: RESOLVED
• Resolution: WORKSFORME
• Component: Layout and Rendering

[Sammy Gill]

It also affects floats for which the block container is a containing block by:

- Discarding the block-start margin of any float whose block-start outer edge coincides with the block-start inner edge of the container.
- Discarding the inline-start/inline-end margin of an inline-start/inline-end float (or equivalent) whose outer edge on that side coincides with the inner edge of the container.
- Zeroing the inline-axis margins of a float for the purpose of calculating its intrinsic size contributions or its size in the containerâÂÂs inline axis.
- Trimming the block-end margins of a float to the extent necessary to prevent such a margin from extending the block size of a block formatting context root.

https://w3c.github.io/csswg-drafts/css-box-4/#margin-trim-block

[Radar WebKit Bug Importer]

<rdar://problem/104650698>

[Sammy Gill]

Pull request: https://github.com/WebKit/WebKit/pull/9145

[Sammy Gill]

This part of the spec was removed by the CSSWG and will potentially be explored later in a future version of the spec. As a result, this issue no longer applies.