Index: node_modules/autoprefixer/lib/hacks/grid-template.js
===================================================================
--- node_modules/autoprefixer/lib/hacks/grid-template.js	(revision 2058e5c694bb6097866a5fe6503c519e8f74970f)
+++ node_modules/autoprefixer/lib/hacks/grid-template.js	(revision 2058e5c694bb6097866a5fe6503c519e8f74970f)
@@ -0,0 +1,69 @@
+let Declaration = require('../declaration')
+let {
+  getGridGap,
+  inheritGridGap,
+  parseTemplate,
+  warnGridGap,
+  warnMissedAreas
+} = require('./grid-utils')
+
+class GridTemplate extends Declaration {
+  /**
+   * Translate grid-template to separate -ms- prefixed properties
+   */
+  insert(decl, prefix, prefixes, result) {
+    if (prefix !== '-ms-') return super.insert(decl, prefix, prefixes)
+
+    if (decl.parent.some(i => i.prop === '-ms-grid-rows')) {
+      return undefined
+    }
+
+    let gap = getGridGap(decl)
+
+    /**
+     * we must insert inherited gap values in some cases:
+     * if we are inside media query && if we have no grid-gap value
+     */
+    let inheritedGap = inheritGridGap(decl, gap)
+
+    let { areas, columns, rows } = parseTemplate({
+      decl,
+      gap: inheritedGap || gap
+    })
+
+    let hasAreas = Object.keys(areas).length > 0
+    let hasRows = Boolean(rows)
+    let hasColumns = Boolean(columns)
+
+    warnGridGap({
+      decl,
+      gap,
+      hasColumns,
+      result
+    })
+
+    warnMissedAreas(areas, decl, result)
+
+    if ((hasRows && hasColumns) || hasAreas) {
+      decl.cloneBefore({
+        prop: '-ms-grid-rows',
+        raws: {},
+        value: rows
+      })
+    }
+
+    if (hasColumns) {
+      decl.cloneBefore({
+        prop: '-ms-grid-columns',
+        raws: {},
+        value: columns
+      })
+    }
+
+    return decl
+  }
+}
+
+GridTemplate.names = ['grid-template']
+
+module.exports = GridTemplate