diff --git a/scss/utilities/_spacing.scss b/scss/utilities/_spacing.scss
index cd543c8c90..b7ff044b6d 100644
--- a/scss/utilities/_spacing.scss
+++ b/scss/utilities/_spacing.scss
@@ -1,3 +1,7 @@
+// Width
+
+.w-100 { width: 100% !important; }
+
 // Margin and Padding
 
 .m-x-auto {