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curriculum/challenges/english/blocks/learn-css-variables-by-building-a-city-skyline/5d822fd413a79914d39e98d8.md

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--description--

Use the same variable as the background-color of the .bb1b, .bb1c, and .bb1d classes to fill in the rest of the building.

--hints--

The background-color of the .bb1b element should be set.

js
assert.exists(new __helpers.CSSHelp(document).getStyle('.bb1b')?.backgroundColor)

You should use var(--building-color1) to set the background-color of the .bb1b element.

js
assert.equal(new __helpers.CSSHelp(document).getStyle('.bb1b')?.getPropVal('background-color', true), 'var(--building-color1)');

The background-color of the .bb1c element should be set.

js
assert.exists(new __helpers.CSSHelp(document).getStyle('.bb1c')?.backgroundColor)

You should use var(--building-color1) to set the background-color of the .bb1c element.

js
assert.equal(new __helpers.CSSHelp(document).getStyle('.bb1c')?.getPropVal('background-color', true), 'var(--building-color1)');

The background-color of the .bb1d element should be set.

js
assert.exists(new __helpers.CSSHelp(document).getStyle('.bb1d')?.backgroundColor)

You should use var(--building-color1) to set the background-color of the .bb1d element.

js
assert.equal(new __helpers.CSSHelp(document).getStyle('.bb1d')?.getPropVal('background-color', true), 'var(--building-color1)');

--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>
    </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: #999;
}

.bb1a {
  width: 70%;
  height: 10%;
  background-color: var(--building-color1);
}
--fcc-editable-region--
.bb1b {
  width: 80%;
  height: 10%;
}

.bb1c {
  width: 90%;
  height: 10%;
}

.bb1d {
  width: 100%;
  height: 70%;
}
--fcc-editable-region--