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+<!DOCTYPE HTML>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<html><head>
+ <meta charset="utf-8">
+ <title>CSS Grid Test: subgrid item using line names from outer grid</title>
+ <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
+ <link rel="help" href="https://drafts.csswg.org/css-grid-2">
+ <link rel="match" href="line-names-001-ref.html">
+ <style>
+html,body {
+ color:black; background-color:white; font:24px/1 monospace; padding:0; margin:0;
+}
+
+.grid {
+ display: grid;
+ grid: auto / [a] 50px 50px [a] 50px 50px [a];
+ padding: 20px 10px;
+}
+
+.subgrid {
+ display: grid;
+ grid: 50px / subgrid;
+ grid-column: span 3;
+}
+
+x { background: grey; }
+
+ </style>
+</head>
+<body>
+
+<div class="grid">
+ <div class="subgrid">
+ <x style="grid-column: span a / a -1"></x>
+ </div>
+</div>
+
+<script>
+ const expectedResults = [
+ "subgrid [] [] [] []",
+ ];
+ [...document.querySelectorAll('.subgrid')].forEach(function(subgrid, i) {
+ let actual = window.getComputedStyle(subgrid)['grid-template-columns'];
+ let expected = expectedResults[i];
+ if (actual != expected) {
+ let err = "Unexpected getComputedStyle value for subgrid " + i + " with className '" + subgrid.className + "':" +
+ " Actual: \"" + actual + "\", Expected: \"" + expected + "\"";
+ document.body.appendChild(document.createTextNode(err));
+ }
+ });
+</script>
+
+</body>
+</html>