chromium/third_party/blink/web_tests/external/wpt/html/semantics/embedded-content/the-img-element/support/external-sheet.svg

<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg">
  <style xmlns="http://www.w3.org/1999/xhtml">:root { background-color: green }</style>
  <link xmlns="http://www.w3.org/1999/xhtml" rel="stylesheet" type="text/css" href="red-bg.css" />
</svg>