curriculum/challenges/english/blocks/learn-more-about-css-pseudo-selectors-by-building-a-balance-sheet/61fd71d596e8f253b9408b39.md
The tr element is used to indicate a table row. Add a tr element within your thead element. In your new tr element, add a td element, followed by three th elements.
The td element indicates a data cell, while the th element indicates a header cell.
Your thead element should have a tr element.
assert(document.querySelector('thead')?.children?.[0]?.localName === 'tr');
Your tr element should have a td element as the first child.
assert(document.querySelector('tr')?.children?.[0]?.localName === 'td');
Your tr element should have three th elements, after the td element.
assert(document.querySelector('tr')?.children?.[1]?.localName === 'th');
assert(document.querySelector('tr')?.children?.[2]?.localName === 'th');
assert(document.querySelector('tr')?.children?.[3]?.localName === 'th');
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Balance Sheet</title>
<link rel="stylesheet" href="./styles.css">
</head>
<body>
<main>
<section>
<h1>
<span class="flex">
<span>AcmeWidgetCorp</span>
<span>Balance Sheet</span>
</span>
</h1>
<div id="years" aria-hidden="true">
<span class="year">2019</span>
<span class="year">2020</span>
<span class="year">2021</span>
</div>
<div class="table-wrap">
<table>
<caption>Assets</caption>
--fcc-editable-region--
<thead>
</thead>
--fcc-editable-region--
<tbody>
</tbody>
</table>
<table>
</table>
<table>
</table>
</div>
</section>
</main>
</body>
</html>