diff --git a/static/index.html b/static/index.html
index b445a43..945df35 100644
--- a/static/index.html
+++ b/static/index.html
@@ -7,9 +7,20 @@
 		<style type="text/css">
 html, body {
 	font-family: sans-serif;
+	margin:0;
+	width:100%;
+	height:100%;
+}
+#padder {
+	height:100%;
+	position:relative;
 }
 #surrogate-area {
-    height:300px;
+    position:absolute;
+    top:10px;
+    bottom:10px;
+    left:10px;
+    right:10px;
 }
 /* hide close button */
 .contented-close {
@@ -18,9 +29,11 @@ html, body {
 		</style>
 	</head>
 	<body>
-        <div id="surrogate-area">
-            Loading...
-        </div>
+		<div id="padder">
+			<div id="surrogate-area">
+				Loading...
+			</div>
+		</div>
         
         <script type="text/javascript" src="/jquery-1.12.4.min.js"></script>
 		<script type="text/javascript" src="/sdk.js"></script>
