diff --git a/nga-js/style.css b/nga-js/style.css
index 6ae6ea2..523d179 100644
--- a/nga-js/style.css
+++ b/nga-js/style.css
@@ -63,4 +63,6 @@
  	margin-left: 0.5em;
  }
  canvas {
+	width:100%;
+	height:auto;
  }