Re: suggestion of adding top,right,bottom,right to box-shadow

On Wed, Sep 14, 2011 at 7:31 AM, Alan Gresley <> wrote:
> On 14/09/2011 11:18 PM, Brad Kemper wrote:
>> The way you describe hiding parts of the shadow by specifying them
>> per-edge sounds awkward and unnatural. The UA would have to be able
>> to have separate offsets and blurs and spreads and colors for each
>> side, somehow joined at the corners. But based on your use case,
>> really all you need is a way to crop the shadow. Using
>> overflow:hidden is not that hacky a way to do it, and much more
>> natural than your idea.
> I'm not sure what Shi really wants.
> Maybe a mock up graphic may help us know what you are seeking. The way you
> described the corner joins in a way that is not how box-shadow currently
> works makes me wonder if this can not be done another way.
> The below demo may be more the rendering you are wanting.

is a blog post showing one method to achieve a shadow on only one side
of an element.  This only has minimal reasoning as to *why* you'd want
it, but one possible explanation is to achieve more of a "lifted"
look, where the shadow is smaller than the box.

I think this is already well-achieved by having a negative spread
radius (method 2 in the linked blog post).  Unless there's a good
reason why this won't work, I don't think it's necessary to add
anything to box-shadow.


Received on Wednesday, 14 September 2011 15:18:15 UTC