diff --git a/public/threeJS/three1.html b/public/threeJS/three1.html
index 42b9d47f8f2e42d60362f078f3b7fe0b8dd4d110..8b60dad33afda1842e3ff5964614e224dc15217f 100644
--- a/public/threeJS/three1.html
+++ b/public/threeJS/three1.html
@@ -5,16 +5,16 @@
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<title>Cube Demo</title>
+ <style>
+ body { margin: 0; }
+ canvas { display: block; }
+ </style>
<!-- three.js -->
<script src="https://unpkg.com/three@0.126.0/build/three.js"></script>
</head>
<body>
-
-<!-- Starting an immersive WebXR session requires user interaction.
- We start this one with a simple button. -->
<script>
- // ------------------------------------------------
// BASIC SETUP
// ------------------------------------------------
@@ -29,7 +29,7 @@ camera.position.z = 4;
var renderer = new THREE.WebGLRenderer({antialias:true});
// Configure renderer clear color
-renderer.setClearColor("#000000");
+renderer.setClearColor("#ff0000");
// Configure renderer size
renderer.setSize( window.innerWidth, window.innerHeight );