resize canvas to make space for extra information

index.html

@@ -4,14 +4,10 @@
         <meta charset="utf-8">
         <title>WebGL Tutorial</title>
         <style>
-html,body {
-    height: 100%;
-    margin: 0;
-    overflow: hidden;
-}
 canvas#view {
+    display: block;
     width: 100%;
-    height: 100%;
+    height: 25em;
 	background: radial-gradient(gray, transparent);
 }
         </style>