Re: [CSS 2.1] [Section 10.3.3] Questions on width of block-level, non-replaced elements in normal flow

Alan Gresley wrote:
> Gérard Talbot wrote:
> [snip]
>> 2-
>> The spec says:
>> "
>> If there is exactly one value specified as 'auto', its used value follows
>> from the equality.
>> "
>> What if the one single specified value as 'auto' is width and complying
>> with the equation would imply that the used width is negative... How 
>> could
>> this be?
>> E.g.:
>> I must be missing something here...
>> regards, Gérard
> Yes you are missing something Gérard. The same results would be seen if 
> the child had this.
> div#child
>   {
>   border-right: green solid 200px;
>   margin-right: 10000px;
>   }
> The div#child is completely overflowing it's containing block 
> (div#containing-block) which is width:0. The visual overflow causes 
> elements to overlap (this is not quite obvious in your test case).

To follow up, what is happening is the declared value of div#child of 
  margin-right: 400px (in Gérard's test case) or my ridiculous 
margin-right: 10000px are completely being ignore. The computed value 
is margin-right: -400px. This is seen by adding an additional element 
after div#containing-block.


This test shows correct in all implementations including IE7.


Armies Cannot Stop An Idea Whose Time Has Come. - Victor Hugo

Received on Wednesday, 25 August 2010 03:53:41 UTC