diff --git a/sass/elements/image.sass b/sass/elements/image.sass
index cfa64fef..7547abcf 100644
--- a/sass/elements/image.sass
+++ b/sass/elements/image.sass
@@ -9,6 +9,8 @@ $dimensions: 16 24 32 48 64 96 128 !default
     width: 100%
     &.is-rounded
       border-radius: $radius-rounded
+  &.is-fullwidth
+    width: 100%
   // Ratio
   &.is-square,
   &.is-1by1,