218 lines
4.2 KiB
Markdown
218 lines
4.2 KiB
Markdown
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---
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id: 5d822fd413a79914d39e98f0
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title: Step 40
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challengeType: 0
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dashedName: step-40
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---
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# --description--
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Gradients in CSS are a way to transition between colors across the distance of an element. They are applied to the `background` property and the syntax looks like this:
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```css
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gradient-type(
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color1,
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color2
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);
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```
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In the example, `color1` is solid at the top, `color2` is solid at the bottom, and in between it transitions evenly from one to the next. In `.bb1a`, add a gradient of type `linear-gradient` to the `background` property with `--building-color1` as the first color and `--window-color1` as the second.
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# --hints--
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You should apply a `background` to `.bb1a`.
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```js
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assert(new __helpers.CSSHelp(document).getStyle('.bb1a')?.background);
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```
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You should give the `background` a `linear-gradient`.
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```js
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assert.include(new __helpers.CSSHelp(document).getStyle('.bb1a')?.background, 'linear-gradient');
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```
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You should give the `background` a `linear-gradient` starting from `--building-color1`.
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```js
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assert.include(new __helpers.CSSHelp(document).getStyle('.bb1a')?.getPropVal('background', true), 'linear-gradient(var(--building-color1');
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```
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You should give the `background` a `linear-gradient` ending at `--window-color1`.
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```js
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assert.include(new __helpers.CSSHelp(document).getStyle('.bb1a')?.getPropVal('background', true), 'linear-gradient(var(--building-color1),var(--window-color1))');
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```
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# --seed--
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## --seed-contents--
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```html
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<!DOCTYPE html>
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<html>
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<head>
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<title>freeCodeCamp Skyline Project</title>
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<link href="styles.css" rel="stylesheet" type="text/css" />
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</head>
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<body>
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<div class="background-buildings">
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<div></div>
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<div></div>
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<div class="bb1">
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<div class="bb1a"></div>
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<div class="bb1b"></div>
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<div class="bb1c"></div>
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<div class="bb1d"></div>
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</div>
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<div class="bb2"></div>
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<div class="bb3"></div>
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<div></div>
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<div class="bb4"></div>
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<div></div>
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<div></div>
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</div>
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<div class="foreground-buildings">
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<div></div>
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<div></div>
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<div class="fb1"></div>
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<div class="fb2"></div>
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<div></div>
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<div class="fb3"></div>
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<div class="fb4"></div>
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<div class="fb5"></div>
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<div class="fb6"></div>
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<div></div>
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<div></div>
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</div>
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</body>
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</html>
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```
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```css
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:root {
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--building-color1: #aa80ff;
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--building-color2: #66cc99;
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--building-color3: #cc6699;
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--building-color4: #538cc6;
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--window-color1: black;
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}
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* {
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border: 1px solid black;
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box-sizing: border-box;
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}
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body {
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height: 100vh;
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margin: 0;
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overflow: hidden;
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}
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.background-buildings, .foreground-buildings {
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width: 100%;
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height: 100%;
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display: flex;
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align-items: flex-end;
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justify-content: space-evenly;
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position: absolute;
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top: 0;
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}
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/* BACKGROUND BUILDINGS - "bb" stands for "background building" */
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.bb1 {
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width: 10%;
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height: 70%;
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display: flex;
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flex-direction: column;
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align-items: center;
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}
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--fcc-editable-region--
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.bb1a {
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width: 70%;
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height: 10%;
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background-color: var(--building-color1);
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}
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--fcc-editable-region--
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.bb1b {
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width: 80%;
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height: 10%;
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background-color: var(--building-color1);
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}
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.bb1c {
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width: 90%;
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height: 10%;
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background-color: var(--building-color1);
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}
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.bb1d {
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width: 100%;
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height: 70%;
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background-color: var(--building-color1);
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}
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.bb2 {
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width: 10%;
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height: 50%;
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background-color: var(--building-color2);
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}
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.bb3 {
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width: 10%;
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height: 55%;
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background-color: var(--building-color3);
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}
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.bb4 {
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width: 11%;
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height: 58%;
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background-color: var(--building-color4);
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}
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/* FOREGROUND BUILDINGS - "fb" stands for "foreground building" */
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.fb1 {
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width: 10%;
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height: 60%;
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background-color: var(--building-color4);
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}
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.fb2 {
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width: 10%;
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height: 40%;
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background-color: var(--building-color3);
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}
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.fb3 {
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width: 10%;
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height: 35%;
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background-color: var(--building-color1);
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}
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.fb4 {
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width: 8%;
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height: 45%;
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background-color: var(--building-color1);
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position: relative;
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left: 10%;
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}
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.fb5 {
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width: 10%;
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height: 33%;
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background-color: var(--building-color2);
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position: relative;
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right: 10%;
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}
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.fb6 {
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width: 9%;
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height: 38%;
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background-color: var(--building-color3);
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}
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```
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