From f16ad2253053c3193cf2744e196680c17287e84c Mon Sep 17 00:00:00 2001
From: Mark Otto <markdotto@gmail.com>
Date: Sun, 29 Nov 2015 19:56:17 -0800
Subject: [PATCH] fixes #18188

---
 scss/_reboot.scss | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/scss/_reboot.scss b/scss/_reboot.scss
index 04d1d83118..585adc3c66 100644
--- a/scss/_reboot.scss
+++ b/scss/_reboot.scss
@@ -44,6 +44,8 @@ html {
 //
 // Wrap `@viewport` with `@at-root` for when folks do a nested import (e.g.,
 // `.class-name { @import "bootstrap"; }`).
+//
+// Includes future-proofed vendor prefixes as well.
 @at-root {
   @-moz-viewport      { width: device-width; }
   @-ms-viewport       { width: device-width; }
-- 
2.47.2