diff --git a/scss/utilities/_spacing.scss b/scss/utilities/_spacing.scss
index 9e1802c47c..1f0d77ff09 100644
--- a/scss/utilities/_spacing.scss
+++ b/scss/utilities/_spacing.scss
@@ -20,6 +20,9 @@
   margin-left:  auto !important;
 }
 
+.mr-auto { margin-right: auto !important; }
+.ml-auto { margin-left: auto !important; }
+
 @each $breakpoint in map-keys($grid-breakpoints) {
   @each $prop, $abbrev in (margin: m, padding: p) {
     @each $size, $lengths in $spacers {