diff --git a/README.md b/README.md
index c38ec392..659871f5 100644
--- a/README.md
+++ b/README.md
@@ -81,6 +81,8 @@ html {
 
 This makes it easier to change `box-sizing` in plugins or other components that leverage other behavior.
 
+#### [Demo](https://codepen.io/anon/pen/MGQKxp)
+
 <sup>[back to table of contents](#table-of-contents)</sup>