<!DOCTYPE html>
<html>
<head>
<style>
body {
  zoom: 2;
}
</style>
</head>
<body>
<svg xmlns="http://www.w3.org/2000/svg" width="300" height="300">
  <rect x="0" y="0" width="100" height="100" fill="green" />
</svg>
</body>
</html>