>Sorry for the ignorant, but what is this for? I saw it in someone esle
>code sometimes ago and see it again in another site.
>
>content: ".";
<...>

It's the CSS 'content' property, explained here:
http://www.w3.org/TR/CSS21/generate.html#content

And this explains "what is this for?" part:
http://positioniseverything.net/easyclearing.html

Regards,
Rimantas
--
http://rimantas.com/
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