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chromium/third_party/blink/web_tests/css3/motion-path/offset-anchor-rotation.html 

<!DOCTYPE html>
<style>
#div1 {
    position: absolute;
    left: 400px;
    top: 300px;
    width: 200px;
    height: 100px;
    offset: path('m 0 0 z') 0px 90deg;
    offset-anchor: 21px 67px;
    transform-origin: 0px 0px;
}
</style>
<div id="div1">div1</div>