Get rid of margins on mobile

www/pad/inner.html

@@ -7,6 +7,9 @@
     <script src="/bower_components/jquery/dist/jquery.min.js"></script>
     <script src="/bower_components/ckeditor/ckeditor.js"></script>
     <style>
+    html, body {
+        margin: 0px;
+    }
     #cke_1_top {
         overflow: visible;
     }