--description--

Bootstrap has a class called well that can create a visual sense of depth for your columns.

Nest one div element with the class well within each of your col-xs-6 div elements.

--hints--

You should add a div element with the class well inside each of your div elements with the class col-xs-6

const wells = document.querySelectorAll('div.col-xs-6 > div.well');
assert.lengthOf( wells,2 );

Both of your div elements with the class col-xs-6 should be nested within your div element with the class row.

assert.lengthOf(document.querySelectorAll('div.row > div.col-xs-6'),2);

All 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);

--seed--

--seed-contents--

html

<div class="container-fluid">
  <h3 class="text-primary text-center">jQuery Playground</h3>
  <div class="row">
    <div class="col-xs-6">

    </div>
    <div class="col-xs-6">

    </div>
  </div>
</div>

--solutions--