50x50-viewbox-greencircle.svg

<?xml version="1.0" encoding="UTF-8"?>
<svg width="50" height="50" xmlns="http://www.w3.org/2000/svg"
  xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 100 100">
  <circle cx="50" cy="50" r="40" stroke="lime" fill="lime"/>
</svg>