W3C home > Mailing lists > Public > www-style@w3.org > September 2012

Re: [css3-lists] position:marker and compatibility with existing 'outside' implementations/content

From: Øyvind Stenhaug <oyvinds@opera.com>
Date: Wed, 26 Sep 2012 11:46:54 +0200
To: www-style@w3.org
Message-ID: <op.wk8lggfobunlto@oyvinds-desktop>
On Mon, 24 Sep 2012 14:48:12 +0200, Leif Arne Storset <lstorset@opera.com>  

>> 5) No special attention is given to floats. For instance, here the  
>> marker will overlap the float (and will be a long distance away from  
>> the text that starts the line):
>> <!doctype html>
>> <style>
>>     div {
>>        float: left;
>>        width: 100px;
>>        height: 100px;
>>        background: gray;
>>        margin-right: 40px;
>>     }
>> </style>
>> <div></div>
>> <ul><li>list-item</li></ul>
>> That doesn't happen in Firefox or Gecko, though it does in IE9 and  
>> Opera with Presto>=2.9 or thereabouts. Since changing, we've seen some  
>> issues popping up in the wild about this (e.g. on Wikipedia).
> I'd like to reiterate this point. It breaks quite a few sites. Examples
>    from our bug tracker:
> -
> http://lifehacker.com/5864004/the-done-manifesto-lays-out-13-ground-rules-for-getting-to-done
> - http://distrowatch.com/table.php?distribution=ubuntu
> - http://en.wikipedia.org/w/index.php?title=Deventer&oldid=511633874
> Perhaps a way forward is to place the marker positioning edge flush with
> the first line box in the ancestor list item, rather than the border  
> edge.

Unfortunately, this won't work either, at least not as a general rule.  
Consider e.g. a (thick) border on the list-item - the marker would overlap  
the border, which it doesn't in existing browsers. Or consider a float  
whose containing block is the list-item - marker would overlap the float,  
which again is not currently the case.

I don't currently have a clear idea what kind of text would describe the  
behavior of Gecko or WebKit, though ("Firefox or Gecko" in my original  
mail was a mistake that I just spotted).

Øyvind Stenhaug
Core Norway, Opera Software ASA
Received on Wednesday, 26 September 2012 09:47:27 UTC

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