curriculum/challenges/english/blocks/workshop-city-skyline/5d822fd413a79914d39e98d6.md
Now you have something that is resembling a building. You are ready to create your first variable. In previous lessons you learned that variable declarations begin with two dashes (-) and are given a name and a value like this: --variable-name: value;. In the rule for the bb1 class, create a variable named --building-color1 and give it a value of #999.
You should create a new variable named --building-color1.
assert.exists(new __helpers.CSSHelp(document).isPropertyUsed('--building-color1'));
You should define the --building-color1 variable within .bb1.
assert.exists(new __helpers.CSSHelp(document).getStyle('.bb1')?.getPropertyValue('--building-color1'));
You should give --building-color1 a value of #999.
assert.equal(new __helpers.CSSHelp(document).getStyle('.bb1')?.getPropertyValue('--building-color1').trim(), '#999');
<!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>
* {
border: 1px solid black;
box-sizing: border-box;
}
body {
height: 100vh;
margin: 0;
overflow: hidden;
}
.background-buildings {
width: 100%;
height: 100%;
}
--fcc-editable-region--
.bb1 {
width: 10%;
height: 70%;
display: flex;
flex-direction: column;
align-items: center;
}
--fcc-editable-region--
.bb1a {
width: 70%;
height: 10%;
}
.bb1b {
width: 80%;
height: 10%;
}
.bb1c {
width: 90%;
height: 10%;
}
.bb1d {
width: 100%;
height: 70%;
}