<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg xmlns="http://www.w3.org/2000/svg" width="200mm" height="200mm">
  <rect x="50mm"  y="50mm" width="50mm" height="100mm" fill="blue" id="square-blue" />
  <rect x="100mm" y="50mm" width="50mm" height="100mm" fill="red"  id="square-red" />
</svg>