Learn CSS Variables by Building a City Skyline - Step 15

Tell us what’s happening:

I don’t know what to do here :frowning:

Your code so far

<!-- file: index.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>
/* file: styles.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;
}

/* User Editable Region */

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

    
}

/* User Editable Region */

.bb1b {
  width: 80%;
  height: 10%;
}

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

.bb1d {
  width: 100%;
  height: 70%;
}
    

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Challenge Information:

Learn CSS Variables by Building a City Skyline - Step 15

Hi there. Your goal for this lesson is to assign a CSS property. In this case the background-color . We have a CSS variable already defined with the color we want to use and there is a special syntax mentioned in the lesson related to how to retrieve it. Let me knowif you need any further assistance.

To use a variable, put the variable name in parentheses with var in front of them like this: var(–variable-name). Whatever value you gave the variable will be applied to whatever property you use it on.

Add the variable --building-color1 you created in the previous step as the value of the background-color property of the .bb1a class.

Read the instructions carefully.

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