136370 - css TD borders override TABLE borders when border-collapse is used

Status: CLOSED WONTFIX

(Core :: Layout: Tables, defect)

Description

[Gabriel Radic]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:0.9.9) Gecko/20020311
BuildID:    2002031104

The CSS property "border-collapse : collapse" can be used as a workaround to
override with 0 the default values for cellspacing and cellpading attributes in
HTML.

If the property is used in conjunction with the border property for TABLE and
TD, mozilla will render the TD borders over the TABLE borders. 


Reproducible: Always
Steps to Reproduce:
1. See the css properties in the example attached 


Actual Results:  Mozilla will render the internal horizontal TD border over the
TABLE vertical border.

Expected Results:  Mozilla should end the internal lines at the end of the cell.

Comment 1

[Gabriel Radic]

Attachment: The actual file with the border-colapse property.

Comment 2

[Gabriel Radic]

Attachment: Expected rendering

Comment 3

[Gabriel Radic]

Attachment: Actual Mozilla rendering

Comment 4

[Amarendra Hanumanula]

 Confirmed on WIN2K with Build : 2002040803. Even the table's top border is
rendered with TD border.

Comment 5

[karnaze (gone)]

In the collapsing border model when the table and a table cell have a 
conflicting border with the same width and style, the table cell's border wins 
out. This applies to borders as well as border intersections (but the spec is 
not very clear on that). So, the behavior you are seeing is intentional. If it 
were done the other way and we let the table win out, then we could construct 
another example where we wanted the table cell to have a continuous 
looking border and it wouldn't get it. So, we can't have it both ways. If we 
want the table to win out, then either (1) use a larger border for the table, 
(2)use a higher priority style for the table's border. ->wontfix 

Comment 6

[Gabriel Radic]

karnaze, thanks for the explanation. I was expecting this is the indended
behavior so I guess that's fine.

I was using border-collapse to eliminate default spacing between cells, but that
can be -- and should be -- done using "border-spacing:0". Closing the bug.