diff --git a/src/site/_includes/components/pageheader.njk b/src/site/_includes/components/pageheader.njk
index 74b2527..7acab75 100644
--- a/src/site/_includes/components/pageheader.njk
+++ b/src/site/_includes/components/pageheader.njk
@@ -1,3 +1,4 @@
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
 <script src="https://unpkg.com/mermaid/dist/mermaid.min.js"></script>
 <script>
     mermaid.initialize({