_grid-overlay.scss in flint-gs-2.3.1

- old
+ new

@@ -45,10 +45,10 @@
 /// @requires {Mixin} background-grid
 ///
 /// @group Internal Mixins
 ///
 @mixin flint-overlay-grid {
-  html {
+  @at-root html {
     position: relative;
 
     &:after {
       transform: translateX(-50%);
       content: " ";