--description--

For the sake of clarity, let's label both of our wells with their ids.

Above your left-well, inside its col-xs-6 div element, add an h4 element with the text #left-well.

Above your right-well, inside its col-xs-6 div element, add an h4 element with the text #right-well.

--hints--

You should add an h4 element to each of your <div class="col-xs-6"> elements.

const columnSixes = document.querySelectorAll('.col-xs-6');
const columnSixOneChildren = columnSixes?.[0]?.querySelectorAll(`:scope ${'h4'}`);
assert.lengthOf(columnSixOneChildren,1); 

const columnSixTwoChildren = columnSixes?.[1]?.querySelectorAll(`:scope ${'h4'}`);
assert.lengthOf(columnSixTwoChildren,1);

One h4 element should have the text #left-well.

const firstH4 = document.querySelectorAll('h4')?.[0]; 
assert.match(firstH4?.textContent,/#left-well/gi);

One h4 element should have the text #right-well.

const secondH4 = document.querySelectorAll('h4')?.[1]; 
assert.match(secondH4?.textContent,/#right-well/gi);

All of your h4 elements should have closing tags.

assert.match(code,/<\/h4>/g);
assert.match(code,/<h4/g);
assert.equal(code.match(/<\/h4>/g).length , code.match(/<h4/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 class="well" id="left-well">
        <button class="btn btn-default target"></button>
        <button class="btn btn-default target"></button>
        <button class="btn btn-default target"></button>
      </div>
    </div>
    <div class="col-xs-6">

      <div class="well" id="right-well">
        <button class="btn btn-default target"></button>
        <button class="btn btn-default target"></button>
        <button class="btn btn-default target"></button>
      </div>
    </div>
  </div>
</div>

--solutions--