diff --git a/src/css/_helpers.scss b/src/css/_helpers.scss
index f92477a..5e31463 100644
--- a/src/css/_helpers.scss
+++ b/src/css/_helpers.scss
@@ -96,6 +96,7 @@ $helpers: (
// (flex-wrap, flex-wrap, wrap),
// (align-items-stretch, align-items, stretch),
// (align-items-start, align-items, flex-start),
+ (w100, width, 100%),
),
"sm": (
(flex, display, flex),
diff --git a/src/index.njk b/src/index.njk
index 75c9342..1df3d4c 100644
--- a/src/index.njk
+++ b/src/index.njk
@@ -63,18 +63,18 @@ permalink: