<!DOCTYPE html>
<meta charset="UTF-8">
<title>height composition with interpolate-size: allow-keywords</title>
<link rel="help" href="https://drafts.csswg.org/css-sizing-3/#propdef-height">
<link rel="help" href="https://drafts.csswg.org/css-values-5/#interpolate-size">

<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/interpolation-testcommon.js"></script>
<style>
:root {
  interpolate-size: allow-keywords;
}
.parent {
  hei