<html>
<div id="targetElem"></div>
This test passes if it doesn't crash.
<script>
if (window.testRunner)
    testRunner.dumpAsText();
var head = document.getElementsByTagName("head")[0];
var style = document.createElement("style");
style.innerHTML=`* {
position: inherit;
-webkit-animation-name: name;
-webkit-animation-duration: 0.1s;
-webkit-animation-direction: alternate;
}
@-webkit-keyframes name {
  from {
    word-spacing: 5;
  }
  to {
    word-spacing: 10%;
  }
}
`;
head.appendChild(style);
document.getElementById("targetElem").style.WebkitTransitionDuration="1s";
</script>
</html>