diff --git a/three_d_viewer/templates/three_d_viewer/detail.html b/three_d_viewer/templates/three_d_viewer/detail.html
index bdf2ce9..672ef79 100644
--- a/three_d_viewer/templates/three_d_viewer/detail.html
+++ b/three_d_viewer/templates/three_d_viewer/detail.html
@@ -372,6 +372,6 @@ function handleMouseMove(event){
 {% endblock %}
 
 {% block content %}
-    <canvas id="canvas" style="border: 1px dotted #bfbfbf;"></canvas>
+    <canvas id="canvas" style="border: 1px dotted #bfbfbf;" width="640px" height="480px"></canvas>
     <div><br><span id="progress" style="color: red"></span></div>
 {% endblock %}