Learn CSS Variables by Building a City Skyline - Step 51

Tell us what’s happening:
Describe your issue in detail here.
I am trying to transitrion the linear gradient , one color from 0% to 6% and the other color from 6% to 9% but the below code is not working. Plesae assit if below syntax is correct.
background: linear-gradient(
var(–building-color2) from 0% to 6%, var(–window-color2) from 6% to 9%
);
}
Thanks.

  **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 bb1-window"></div>
      <div class="bb1b bb1-window"></div>
      <div class="bb1c bb1-window"></div>
      <div class="bb1d"></div>
    </div>
    <div class="bb2">
      <div class="bb2a"></div>
      <div class="bb2b"></div>
    </div>
    <div class="bb3"></div>
    <div></div>
    <div class="bb4"></div>
    <div></div>
    <div></div>
  </div>

  <div class="foreground-buildings">
    <div></div>
    <div></div>
    <div class="fb1"></div>
    <div class="fb2"></div>
    <div></div>
    <div class="fb3"></div>
    <div class="fb4"></div>
    <div class="fb5"></div>
    <div class="fb6"></div>
    <div></div>
    <div></div>
  </div>
</body>
</html>
/* file: styles.css */
:root {
--building-color1: #aa80ff;
--building-color2: #66cc99;
--building-color3: #cc6699;
--building-color4: #538cc6;
--window-color1: black;
--window-color2: #8cd9b3;
}

* {
border: 1px solid black;
box-sizing: border-box;
}

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

.background-buildings, .foreground-buildings {
width: 100%;
height: 100%;
display: flex;
align-items: flex-end;
justify-content: space-evenly;
position: absolute;
top: 0;
}

/* BACKGROUND BUILDINGS - "bb" stands for "background building" */
.bb1 {
width: 10%;
height: 70%;
display: flex;
flex-direction: column;
align-items: center;
}

.bb1a {
width: 70%;
}

.bb1b {
width: 80%;
}

.bb1c {
width: 90%;
}

.bb1d {
width: 100%;
height: 70%;
background: linear-gradient(
    var(--building-color1) 50%,
    var(--window-color1)
  );
}

.bb1-window {
height: 10%;
background: linear-gradient(
    var(--building-color1),
    var(--window-color1)
  );
}

.bb2 {
width: 10%;
height: 50%;
background-color: var(--building-color2);
}
.bb2b {
width: 100%;
height: 100%;
background: linear-gradient(
  var(--building-color2) from 0% to 6%, var(--window-color2) from 6% to 9%
);
}
.bb3 {
width: 10%;
height: 55%;
background-color: var(--building-color3);
}

.bb4 {
width: 11%;
height: 58%;
background-color: var(--building-color4);
}

/* FOREGROUND BUILDINGS - "fb" stands for "foreground building" */
.fb1 {
width: 10%;
height: 60%;
background-color: var(--building-color4);
}

.fb2 {
width: 10%;
height: 40%;
background-color: var(--building-color3);
}

.fb3 {
width: 10%;
height: 35%;
background-color: var(--building-color1);
}

.fb4 {
width: 8%;
height: 45%;
background-color: var(--building-color1);
position: relative;
left: 10%;
}

.fb5 {
width: 10%;
height: 33%;
background-color: var(--building-color2);
position: relative;
right: 10%;
}

.fb6 {
width: 9%;
height: 38%;
background-color: var(--building-color3);
}
  
  **Your browser information:**

User Agent is: Mozilla/5.0 (Linux; Android 10; SM-T835) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.0.0 Safari/537.36

Challenge: Learn CSS Variables by Building a City Skyline - Step 51

Link to the challenge:

Okay, you are have some syntax wrong. For this particular exercise your code should look something like below:

background: linear-gradient(
   Black,
   black 10%,
   blue 10%,
   blue 25%,
 );

So when giving a gradient color like this, you don’t have to mark the first color as 0% because it automatically starts there. When transitioning to another color, the browser needs to know where to stop the old color and where to start the new color. Does that make sense?

Hi tculber,
Thanks, this was helpfull. I appreciate.