Learn CSS Variables by Building a City Skyline - Step 51

HTML-CSS
1

I am currently working on CSS responsive web desing using CSS to build a city skyline step 51. I was instructed to use a specified variable for a specific selector but i can seem to recognize what im missing.

Your code so far

/* file: index.Ext.html */
: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) 0%,
    var(--building-color2) 6%,
    var(--window-color2) 6%,
    var(--window-color2) 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);
}
    

/* file: styles.Ext.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) 0%,
    var(--building-color2) 6%,
    var(--window-color2) 6%,
    var(--window-color2) 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 mobile information:

SM-G965U - Android 10 - Android SDK 29

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

Link to the challenge:

2

Hi! Remove the comma at the end of the line and your code will pass

4 Likes
3

There might be a variable missing for a specific selector. It is unclear which selector and variable were specified in your exercise.

It would be helpful if you could provide specific instructions regarding which selector and variable to use. An example might be applying one of the --building-color variables to a particular element’s background or border.

Once you have that information, you can apply the variable using the var() function in your CSS rules.

.some-selector {
background-color: var(--building-color1);
}

We suggest you replace *.some-selector * with the actual selector specified in your exercise, and --building-color1 with the appropriate variable according to your instructions.

1 Like
5

.bb2b should have a linear-gradient transitioning from --building-color2 at 0% to 6%, and --window-color2 at 6% to 9%.

6

As @Ray13 said, you should not have a comma after your final variable here. Remove that stray comma and your code will pass.

1 Like
7

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