495054 - CSS class incorrectly applied to self-closing DIV

Status: RESOLVED DUPLICATE of bug 162653

(Firefox :: General, defect)

Description

[Stephan Beal]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.10) Gecko/2009042523 Ubuntu/9.04 (jaunty) Firefox/3.0.10
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.10) Gecko/2009042523 Ubuntu/9.04 (jaunty) Firefox/3.0.10

Summary: CSS styles assigned to a DIV element which is self-closing will be applied to all remaining items in the DOM at the same or deeper tree level as the self-closing DIV element.

Full details are in the Ubuntu bug db:

https://bugs.launchpad.net/ubuntu/+bug/117516

but they've asked me to re-post it here.

It's been seen in every version since at least 2.0.x.

Reproducible: Always

Steps to Reproduce:
See link above. An example demonstrating the problem is here:

http://launchpadlibrarian.net/27176943/closing-div.html

The interesting part is the second DIV block defined in that HTML.
Actual Results:  
CSS style from self-closing DIV node "leaks" out to affect elements which are not in that DIV's branch of the DOM.

Expected Results:  
CSS style should be applied only to the affected DIV element.

Comment 1

[John P Baker]

Attachment: text/html

Comment 2

[John P Baker]

Attachment: application/xhtml+xml

You are serving your XHTML as text/html.  According to the XHTML 1.0
specification, you may only do this if your XHTML follows the Appendix C
compatibility guidelines.

=> Duplicate of bug 162653

Comment 3

[Micah Gersten]

Attachment: XHTML 1.0 Strict Test

I attached an XHTML 1.0 Strict page that did show the problem.

Comment 4

[Micah Gersten]

Ah, I see, my test doesn't work either when the content type is changed.