Autoprefixer on Twitter: "Our Grid hero, @PetukhovYevgeny found a way to add grid-gap support to Autopefixer by adding additional cells to -ms-grid-rows and -ms-grid-columns. What doy ou think? https://t.co/nw4dRMa0lL… https://t.co/zYfntcNPI1"
Supporting CSS Grid in Internet Explorer | by Elad Shechter | Medium
Autoprefixerを使ってCSSグリッドレイアウトのIE対応をもっと便利に拡張する方法
Using CSS Grid: Supporting Browsers Without Grid — Smashing Magazine