<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>grid-template-columns interpolation</title>
    <link rel="help" href="https://drafts.csswg.org/css-grid/#track-sizing">
    <meta name="assert" content="grid-template-columns supports animation.">
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
    <script src="/css/support/interpolation-testcommon.js"></script>
    <style>
      .parent {
        grid-template-columns: 10