Closed Bug 837417 Opened 11 years ago Closed 11 years ago

This HTML code sends Firefox 18.0.1 nuts!! (adds margin to wrong div)

Categories

(Core :: Layout, defect)

Product:
Core
Component:
Layout
Version:
18 Branch
Platform:
x86_64
macOS
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED DUPLICATE of bug 451791

People

(Reporter: mozdev, Unassigned)

Details

Attachments

(1 file)

Schermata 2013-02-02 alle 19.34.59.png
56.55 KB, image/png
Details 
User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:18.0) Gecko/20100101 Firefox/18.0
Build ID: 20130116073211

Steps to reproduce:

 Wrote this code in an HTML page (as clean and small as possible, all CSS inlined):


<!DOCTYPE html>
<html lang="it">
	<head>
		<title>Whoa!</title>
	</head>
	<body>
		<div style="background:#777;">
			<div style="float:left;">button</div>
			<div style="clear:both;"></div>
		</div>
		<div style="margin:100px 0 0 0;border:1px solid red;">What the F?</div>
	</body>
</html>

Firefox (18.0.1 OSX) adds the (100px) margin BOTH to the bottom DIV, and to the TOP div!



Actual results:

Firefox (18.0.1) adds the (100px) margin BOTH to the bottom DIV, and to the TOP div! So the top (background:#777) DIV is not on top of page but in the middle of it. In other words a margin is applied to a DIV that has no margin whatever.


Expected results:

The top (background:#777) DIV should stay on top of page, while the bottom DIV has a 100px margin on top
- removing the float on the button makes the wrong margin disappear
- removing the clearing div makes the wrong margin disappear although top deiv becames thin (as expected)
- changing the margin:100px to a padding makes the wrong margin disappear
- setting a border:1px solid red to the top div makes the wrong margin disappear (?!?!)
Hardware: x86 → x86_64
Component: Untriaged → Layout
Product: Firefox → Core
Summary: This HTML code sends Firefox 18.0.1 nuts!! → This HTML code sends Firefox 18.0.1 nuts!! (adds margin to wrong div)
Sounds very much like bug 451791.
Depends on: 451791
Based on the description of the bug envelope in comment 1, I think this _is_ bug 451791, not just a relative.
Status: UNCONFIRMED → RESOLVED
Closed: 11 years ago
Resolution: --- → DUPLICATE
No longer depends on: 451791
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