--description--

Now let's make sure all the content on your page is mobile-responsive.

Let's nest your h3 element within a div element with the class container-fluid.

--hints--

Your div element should have the class container-fluid.

assert.isTrue(document.querySelector('div')?.classList?.contains('container-fluid'));

Each of your div elements should have closing tags.

assert.match(code,/<\/div>/g);
assert.match(code,/<div/g);

assert.equal(code.match(/<\/div>/g).length ,code.match(/<div/g).length);

Your h3 element should be nested inside a div element.

const divElement = document.querySelector('div');
const divChildren = divElement?.querySelectorAll(`:scope ${'h3'}`)
assert.lengthOf(divChildren,1);

html

<h3 class="text-primary text-center">jQuery Playground</h3>

html

<div class="container-fluid">
    <h3 class="text-primary text-center">jQuery Playground</h3>
</div>