<!DOCTYPE HTML>
<html>
<head>
  <meta name="viewport" content="width=device-width">
  <style>
    body, html {
      width: 100%;
      height: 100%;
      margin: 0;
    }
    div {
      background-color: green;
      width: 100px;
      height: 100px;
      position: absolute;
      left: 50%;
      top: 50%;
      margin-left: -50px;
      margin-top: -50px;
    }
  </style>
</head>
<body>
<!--Unscrollable page but with a rect in the center to give us visual feedback
when zooming-->
<div></div>
</body>
