svg-resource-fragment-identifier-background.html

<!DOCTYPE html>
<style>
  div {
    width:  100px;
    height: 100px;
  }
</style>
<div style="background: url('resources/fragment-identifiers.svg#red')"></div>
<div style="background: url('resources/fragment-identifiers.svg#green')"></div>
<div style="background: url('resources/fragment-identifiers.svg#blue')"></div>

chromium/third_party/blink/web_tests/svg/css/svg-resource-fragment-identifier-background.html