RE: [css3-background] Negative box-shadow blur: equivalent to 0px or invalid ?

> From: Brad Kemper [mailto:brad.kemper@gmail.com]


> Interesting. I wonder if that is related to the pixel rounding thing,
> where anything other than an integer number of pixels (or perhaps
> device pixels?) are rounded down. I think some clarification in the
> spec is needed about what happens with half pixels or other non-integer
> blurs, whether or not an odd number width for the total blur is allowed,
> and this new issue of what should happen to negative blurs. It seems to
> me like there is some normalization happening.

I am asking about a specific issue: whether 'negative blur is not allowed'
means the whole property value should be treated as invalid.

Rounding is a different problem.