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Step 15

curriculum/challenges/english/blocks/workshop-city-skyline/5d822fd413a79914d39e98da.md

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--description--

Your first building looks pretty good now. Nest three new div elements in the .background-buildings container and give them the classes of bb2, bb3, and bb4 in that order. These will be three more buildings for the background.

--hints--

You should create a div with a class of bb2.

js
assert.exists(document.querySelector('div.bb2'));

You should create a div with a class of bb3.

js
assert.exists(document.querySelector('div.bb3'));

You should create a div with a class of bb4.

js
assert.exists(document.querySelector('div.bb4'));

You should create 3 new div elements.

js
assert.lengthOf(document.querySelectorAll('div'), 9);

You should place these div elements within the .background-buildings element.

js
assert.lengthOf(document.querySelector('div.background-buildings')?.children, 4);

You should place the elements in the correct order.

js
function __t(a, b) {
  return [...document.querySelector(a)?.nextElementSibling?.classList]?.includes(b);
}
assert.isTrue(__t('div.bb1','bb2') && __t('div.bb2','bb3') && __t('div.bb3','bb4'));

--seed--

--seed-contents--

html
<!DOCTYPE html>
<html lang="en">    
  <head>
    <meta charset="UTF-8">
    <title>City Skyline</title>
    <link href="styles.css" rel="stylesheet" />   
  </head>

  <body>
    <div class="background-buildings">
      <div class="bb1">
        <div class="bb1a"></div>
        <div class="bb1b"></div>
        <div class="bb1c"></div>
        <div class="bb1d"></div>
      </div>
--fcc-editable-region--

--fcc-editable-region--
    </div>
  </body>
</html>
css
* {
  border: 1px solid black;
  box-sizing: border-box;
}

body {
  height: 100vh;
  margin: 0;
  overflow: hidden;
}

.background-buildings {
  width: 100%;
  height: 100%;
}

.bb1 {
  width: 10%;
  height: 70%;
  display: flex;
  flex-direction: column;
  align-items: center;
  --building-color1: #aa80ff;
}

.bb1a {
  width: 70%;
  height: 10%;
  background-color: var(--building-color1);
}

.bb1b {
  width: 80%;
  height: 10%;
  background-color: var(--building-color1);
}

.bb1c {
  width: 90%;
  height: 10%;
  background-color: var(--building-color1);
}

.bb1d {
  width: 100%;
  height: 70%;
  background-color: var(--building-color1);
}