195951 - Problem with -moz-border-radius and negative margin

Status: RESOLVED INVALID

(Core :: CSS Parsing and Computation, defect)

Description

[Marek Stępień [:marcoos, inactive]]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4a) Gecko/20030303
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4a) Gecko/20030303

2003030308 build (and probably some others) doesn't show .posts:first-line in
Daniel Glazman's weblog, while older builds do it properly.
Glazman uses the following css code to push first line of his every blog entry
left by 1 centimeter.

.posts:first-line {
      font-weight: bold;
      margin-left: -1cm;
      background-color: rgb(160,160,210);
      -moz-border-radius: 27px; padding: 5px 25px;
    }

Mozilla doesn't display the background of the "pushed" part. And it should!

Reproducible: Always

Steps to Reproduce:
1. Go to Daniel Glazman's weblog

Actual Results:  
The background looks as if there were no :first-line css attached, but the text
of the first line is a proof, that the style *is* applied. 

Expected Results:  
Display it the way previous builds did it.

Comment 1

[Marek Stępień [:marcoos, inactive]]

Attachment: Screenshot of Mozilla 2003030308 and Phoenix 0.5 displaying Glazman's blog

Comment 2

[Boris Zbarsky [:bzbarsky]]

1) There is no DOM manipulation here, so this should be in the Style System or
   Layout component (as it happens, this is Style System).
2) The bug is invalid.  See
   <http://www.w3.org/TR/CSS21/selector.html#first-line-pseudo>, in particular
   the part that says:

     Only the following properties apply to a :first-line pseudo-element: font
     properties, color properties, background properties, 'word-spacing',
     'letter-spacing', 'text-decoration', 'vertical-align', 'text-transform',
     'line-height', and 'clear'.

Which means that padding and border properties do _not_ apply.  This has gotten
fixed recently (we used to apply all sorts of things to :first-line, incorrectly).

Comment 3

[Boris Zbarsky [:bzbarsky]]

Marking invalid.

Comment 4

[Daniel Glazman (:glazou) (not active in Mozilla any more)]

Absolutely. I was using that bug in my blog to enhance the presentation. I'll
modify my markup.