Open Bug 1100582 Opened 10 years ago Updated 2 years ago

margin-top animation behaves different with css border presence at the parent node

Categories

(Core :: Layout, defect)

Product:
Core
Component:
Layout
Type:
defect

Tracking

()

Status:
UNCONFIRMED

People

(Reporter: mgalli, Unassigned)

References

Details

I have two cases: 1) http://taboca.github.io/TagVisor/center-border.html 2) http://taboca.github.io/TagVisor/center.html The case 1) is correct, as designed.The only difference it 1px border which is placed in a DIV a div that is the parent for an inner DIV which is animated to become in the center (animation in the inner DIV is margin-top). If you say that this is a bug I can *try* to produce a testcase.
Summary: margin-top animation behaves different with css border presence → margin-top animation behaves different with css border presence at the parent node
Status: NEW → UNCONFIRMED
Ever confirmed: false
Component: DOM: Core & HTML → Layout
It's not clear whether this is a bug, but chances are you're getting margin collapsing. Whether you _should_ be getting it is hard to tell. A page that just has the static rules for the point when you think things look wrong would make it a lot simpler to tell.
Thanks, Boris, for this note — I think I had an old interaction bug with you guys where I learned a bit about the margin collapsing problem. I will re read that bug to understand. BTW the same happens with Chrome.
That makes it pretty likely that this is a margin collapsing issue and not a bug, fwiw.
Blocks: 760442
Severity: normal → S3
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