CSS Box Sizing Module Level 3 by World Wide Web Consortium
= CSS Box Sizing Module Level 3 by World Wide Web Consortium
{c}
{title2=2026-09-04}
https://www.w3.org/TR/2026/WD-css-sizing-3-20260904/
Working Draft, 4 September 2026; §3.1.1 specifies preferred-size properties and their applicability, excluding non-replaced inline boxes from width/height sizing.