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Bug 15750 - Margin collapsing: exclude block formatting contexts from some of the notes
Summary: Margin collapsing: exclude block formatting contexts from some of the notes
Status: NEW
Alias: None
Product: CSS
Classification: Unclassified
Component: CSS Level 2 (show other bugs)
Version: unspecified
Hardware: All Windows 3.1
: P2 normal
Target Milestone: ---
Assignee: Bert Bos
QA Contact: public-css-bugzilla
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-01-27 18:56 UTC by Anton P
Modified: 2012-12-04 00:52 UTC (History)
0 users

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Description Anton P 2012-01-27 18:56:03 UTC 
Reported by Anton Prowse

In the note in 8.3.1 (Collapsing margins) that lists the practical implications of the adjacency/collapsing rules defined in that section, the last four items state that collapsing occurs between certain elements' margins and their other margins or their children's margins under certain conditions.

However, certain elements which establish block formatting contexts may also satisfy those stated conditions and yet still do not collapse their margins as described (as can be deduced from the adjacency/collapsing rules).  So those four items need to be qualified to exclude BFCs.

Conversation begins:
Bug description:
http://lists.w3.org/Archives/Public/www-style/2011Mar/0425.html (#2)