Re: [css-ui-3] box-sizing: padding-box

I had a brief check through the archives the last few times I had wanted it
- I probably bounded the search to only a few years to be fair.

I had assumed the auto would throw the spanner in the works.

I might throw an example on specifiction but essentially in a % based
column layout where changing the spacing between the columns is done with
margins.

On Mon, Jun 22, 2015 at 9:10 PM Tab Atkins Jr. <jackalmage@gmail.com> wrote:

> On Mon, Jun 22, 2015 at 12:50 PM, Florian Rivoal <florian@rivoal.net>
> wrote:
> >> On 22 Jun 2015, at 21:40, Jonathan Kingston <jonathan@jooped.com>
> wrote:
> >>
> >> However could I ask if there was a reason margin-box was never
> considered?
> >
> > It was considered. I've been through the archives of the www-style
> recently, and there were about 2 or 3 discussions during the last 15 years
> on this topic.
> >
> > The conclusion was that it was possible, but that there was not enough
> demand / not enough use cases to
> > justify specifying, writing tests, implementing, etc...
>
> Importantly, margin-collapsing makes it very unclear exactly what the
> bounds of your margin box are.  Solving this is tricky, and unlikely
> to always (or even often) be what is wanted.
>
> Also, margins have 'auto', which complicates things.  Border/padding
> are always lengths/percentages, much simpler.
>
> ~TJ
>