106404 - Webpage can force color with CSS !important despite "Use my colors only" pref

Status: RESOLVED DUPLICATE of bug 43220

(Core :: Layout, defect)

Description

[Ben Bucksch (:BenB)]

Reproduction:
1. Activate "Use my colors only" pref
2. Visit a page with a link with CSS "color: black !important"

Actual result:
Link is black

Expected result:
Link is blue (user pref)

Additional comments:
I leave it up to someone else to produce a reduced testcase :).
Here's some relevant code from the page I saw:

<font face="Arial" size="2" color="Black">
<a href="view.cfm?view=..."
 style="text-decoration: none !important; color: black !important;">
Imri Vzone 19er
</font></a>

<http://www.brinkmann.de/view.cfm?view=Computer%20%2B%20Zubeh%F6r%7C19er%20%2D%2021er%20%5BMonitore%20%2F%20Displays%5D%7Cnone>

Comment 1

[Ing. Victor J. Zuylen, MA]

According to section 6.4.2 of the CSS2 spec
(http://www.w3.org/TR/REC-CSS2/cascade.html#important-rules), this is actually
CSS1-conformant behavior. User "!important" rules only started taking precedence
over author "!important" rules in CSS2.

Comment 2

[Ben Bucksch (:BenB)]

But we are supposed to follow the CSS2 rules.

Comment 3

[Boris Zbarsky [:bzbarsky]]

Fixed (tested on that page in today's build) by the checkin for bug 43220
("[CASCADE]author !important rules override user !important rules in user.css")

*** This bug has been marked as a duplicate of 43220 ***