Learn CSS Variables by Building a City Skyline - Step 23

Tell us what’s happening:
Describe your issue in detail here.

  **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></div>
    <div></div>
    <div class="bb1">
      <div class="bb1a"></div>
      <div class="bb1b"></div>
      <div class="bb1c"></div>
      <div class="bb1d"></div>
    </div>
    <div class="bb2"></div>
    <div class="bb3"></div>
    <div></div>
    <div class="bb4"></div>
    <div></div>
    <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%;
display: flex;
align-items: flex-end;
justify-content: space-evenly;
}

.bb1 {
width: 10%;
height: 70%;
display: flex;
flex-direction: column;
align-items: center;
--building-color1: #aa80ff;
--building-color2: #66cc99;
}

.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);
}
.bb2 {
width: 10%;
height: 50%;
background-color: var(--variable-name, fallback-value);
}
.bb3 {
width: 10%;
height: 55%;
}

.bb4 {
width: 11%;
height: 58%;
}
  
  **Your browser information:**

User Agent is: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.114 Safari/537.36 Edg/103.0.1264.62

Challenge: Learn CSS Variables by Building a City Skyline - Step 23

Link to the challenge:

This was generic example of syntax:
var(–variable-name, fallback-value)

You can(and need) to set color instead of writing ‘–variable-name, fallback-value’

1 Like

i write color2 but is still the same

You already did stuff with variables:

This is almost the same, you just need to follow the example and set fallback-value to green, as said in the instructions.

If you still stuck, I need to see your new code

how to i set fallback-value to green?

var(–variable-name, fallback-value)

this is example.

Instead of variable-name write your variable name.
Instead of fallback-value write any color you need. For this step you need green if I’m not mistaken

background-color: var(–variable-color2,fallback-green); but still not working

thanks a lot it work

you dont need to write ‘variable’.

you dont need to write ‘fallback’