transform-box-fill-box.html | Explore in Territory

<!DOCTYPE html>
<style>
svg {
  background-color: red;
}
rect {
  transform-box: fill-box;
}
#target1 {
  transform: rotate(90deg);
}
#target2 {
  transform: translate(50%, -50%);
}
#target3 {
  transform-origin: 25% 25%;
  transform: rotate(180deg) translate(-25%, -25%);
}
#target4 {
  transform-origin: 75px 75px;
  transform: rotate(-180deg) translate(-25%, -25%);
}
</style>
<svg width="200" height="200">
  <rect id="target1" x="100" y="100" width="100" height="100" fill="green"/>
  <rect id="target2" x="50" y="50" width="100" height="100" fill="green"/>
  <rect id="target3" x="25" y="25" width="100" height="100" fill="green"/>
  <rect id="target4" x="25" y="25" width="100" height="100" fill="green"/>
</svg>

chromium/third_party/blink/web_tests/svg/transforms/transform-box-fill-box.html