add automatic resizing

index.html

@@ -1,13 +1,15 @@
 <!doctype html>
 <!--https://developer.mozilla.org/en-US/docs/Web/API/WebGL_API/Tutorial/Adding_2D_content_to_a_WebGL_context-->
-<html lang="en">
+<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="">
     <head>
-        <title>WebGL test"</title>
-        <meta charset="utf-8">
+        <meta charset="utf-8" />
+        <meta name="generator" content="by-hand" />
+        <meta name="viewpost" context="width=device-width, inital-scale=1.0, user-scalable=yes" />
+        <title>WebGL test</title>
     </head>
     <body>
-        <canvas id="glCanvas" width="640" height="480"></canvas>
+        <canvas id="glCanvas"></canvas>
     </body>
-
+    <link rel="stylesheet" type="text/css" href="style.css">
     <script src="main.js"></script>
 </html>