css-grid] The `grid-` prefix has been dropped from the `*‑gap` properties · Issue #1036 · postcss/autoprefixer · GitHub
Supporting CSS Grid in Internet Explorer | by Elad Shechter | Medium
Autoprefixer Grid Gap
Add support for grid-gap · Issue #951 · postcss/autoprefixer · GitHub
Autoprefixer on Twitter: "Autoprefixer 8.6 was released. @yepninja added gap property support (@csswg renamed grid-gap to gap) and two values support for gap/grid-gap. 8.6 release name is “Follow Reason”, the motto of
autoprefixer/README.md at main · postcss/autoprefixer · GitHub