205673 - Child element's position incorrect, ignores parent element's margin

Status: RESOLVED DUPLICATE of bug 202449

(Core :: Layout: Floats, defect)

Description

[Mike Caines]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.3) Gecko/20030312
Build Identifier: Mozilla 1.4b

(Refers to testcase)
The position of the small blue div has changed with the newer Mozilla builds. It
affects 1.4a & 1.4b, but not Firebird 0.5 (1.3a). The blue div's position is
oblivious to the margin of its parent. The blue div's origin should be the same
as its parent. (ie. positioned in the top left corner)


Reproducible: Always

Steps to Reproduce:


Actual Results:  
Blue div's vertical placement is calculated incorrectly.

Expected Results:  
Blue div's origin should be the same as that of parent div.

If you change the parent div's margin to a smaller value (ie. -10px to -50px)
the blue div's position is unchanged.

Comment 1

[Mike Caines]

Attachment: testcase

Comment 2

[Mike Caines]

Attachment: screenshot of bug

Comment 3

[Hixie (not reading bugmail)]

This seems like a regression?

Comment 4

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

http://www.w3.org/TR/CSS21/visuren.html#float-position says:

   5. The outer top of a floating box may not be higher than the outer top of
      any block or floated box generated by an element earlier in the source
      document.

Our implementation of this rule was fixed by bug 196919.

Comment 5

[Bill Mason]

Reopening to dup to appropriate bug.

Comment 6

[Bill Mason]

*** This bug has been marked as a duplicate of 202449 ***