diff --git a/index.html b/index.html
index 888d24f..132a49b 100644
--- a/index.html
+++ b/index.html
@@ -7,6 +7,7 @@
     <style>
       body { padding: 0; margin: 0; background-color: #F2F2F2 }
       body { display: flex; align-items: center; justify-content: center; }
+      body canvas { width: auto !important; height: auto !important; max-width: 90vw; max-height: 90vh }
     </style>
     <script src="//cdnjs.cloudflare.com/ajax/libs/p5.js/0.8.0/p5.min.js"></script>
     <script src="//cdnjs.cloudflare.com/ajax/libs/p5.js/0.8.0/addons/p5.dom.min.js"></script>