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curriculum/challenges/english/blocks/learn-responsive-web-design-by-building-a-piano/612e7d1c29fb872d6384379c.md

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--description--

Nest a second div within your existing div, and set the class to be keys.

--hints--

You should create a second div element.

js
const divDiv = document.querySelectorAll('div');
assert(divDiv?.length === 2);

Your new div element should be within your existing div element.

js
const div = document.querySelector('div');
assert(div?.children?.length === 1);
assert(div?.children?.[0]?.localName === 'div');

Your new div element should have the class set to keys.

js
const div = document.querySelector('div');
assert(div?.children?.[0]?.className === 'keys');

--seed--

--seed-contents--

html
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>Piano</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  </head>
  <body>
    <div id="piano">
  --fcc-editable-region--

  --fcc-editable-region--
    </div>
  </body>
</html>
css