RE: [CSS3] border-radius and box-shadow for vignetting

| Text boxes with radiused corners typically have corner radius relative to
| font-size or width of padding. You could still use width percentages by
| using only one argument.

Come to think of it, it would be nice to have a keyword for border-radius:
'auto' (or ...?) that would set border radii to the corresponding
padding-plus-border width. The inside edge of the border would always be
padding-width distance from the content. This makes an
attractively-proportioned radiused border very simple to spec.

Example: http://hpaa.com/csstest/bordradauto.htm

(JavaScripted for moz and webkit)

David Perrell