Date: Thu, 08 Jan 2009 16:31:13 -0500
From: Brett <xba2...@zoominternet.net>
Subject: [css-d] question about combining descendant selectors
To: css-d@lists.css-discuss.org
Message-ID: <496670a1.9060...@zoominternet.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

I'm wondering if combined selectors have a lower specificity than 
non-combined.  For example in my stylesheet I have:

.hm #events_snip .date, .article { color: red; }
.hm #news_snip .date, .article { color: green; }

On the page the .article class shows up green, even though it is NOT 
descendant from #new_snip, it is descendant from #events_snip.  Why does 
it do that?

Now, if I have this:

.hm #events_snip .article { color: yellow; }
.hm #news_snip .date, .article { color: green; }

The .article class shows as yellow.  I don't understand this.

-----

These are two separate selectors, separated by a comma

.hm #events_snip .date, 
.article { color: red; }
.hm #news_snip .date, 
.article { color: green; }

.article{ color: red; }

is overridden by 

.article { color: green; }

because it is lower down the cascade. Neither selector includes #news_snip as 
it is before the comma.

In your second example, since the article is in fact a descendant of 
#events_snip, it takes on the more specific selector .hm #events_snip .article 

See here for more information.
http://www.w3.org/TR/CSS21/syndata.html#rule-sets

Mark

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