138 lines
2.6 KiB
Markdown
138 lines
2.6 KiB
Markdown
|
---
|
||
|
|
id: 6140d94b5fab7f1d73c9bedb
|
||
|
|
title: Step 16
|
||
|
|
challengeType: 0
|
||
|
|
dashedName: step-16
|
||
|
|
---
|
||
|
|
|
||
|
|
# --description--
|
||
|
|
|
||
|
|
The `@keyframes` at-rule is used to define the flow of a CSS animation. Within the `@keyframes` rule, you can create selectors for specific points in the animation sequence, such as `0%` or `25%`, or use `from` and `to` to define the start and end of the sequence.
|
||
|
|
|
||
|
|
`@keyframes` rules require a name to be assigned to them, which you use in other rules to reference. For example, the `@keyframes freeCodeCamp { }` rule would be named `freeCodeCamp`.
|
||
|
|
|
||
|
|
Time to start animating. Create a `@keyframes` rule named `wheel`.
|
||
|
|
|
||
|
|
# --hints--
|
||
|
|
|
||
|
|
You should have a `@keyframes` rule.
|
||
|
|
|
||
|
|
```js
|
||
|
|
assert(new __helpers.CSSHelp(document).getCSSRules('keyframes')?.length === 1);
|
||
|
|
```
|
||
|
|
|
||
|
|
Your new `@keyframes` rule should be named `wheel`.
|
||
|
|
|
||
|
|
```js
|
||
|
|
assert(new __helpers.CSSHelp(document).getCSSRules('keyframes')?.[0]?.name === 'wheel');
|
||
|
|
```
|
||
|
|
|
||
|
|
# --seed--
|
||
|
|
|
||
|
|
## --seed-contents--
|
||
|
|
|
||
|
|
```html
|
||
|
|
<!DOCTYPE html>
|
||
|
|
<html>
|
||
|
|
<head>
|
||
|
|
<meta charset="UTF-8">
|
||
|
|
<title> Learn CSS Animations by Building a Ferris Wheel</title>
|
||
|
|
<link rel="stylesheet" href="./styles.css">
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
<div class="wheel">
|
||
|
|
<span class="line"></span>
|
||
|
|
<span class="line"></span>
|
||
|
|
<span class="line"></span>
|
||
|
|
<span class="line"></span>
|
||
|
|
<span class="line"></span>
|
||
|
|
<span class="line"></span>
|
||
|
|
|
||
|
|
<div class="cabin"></div>
|
||
|
|
<div class="cabin"></div>
|
||
|
|
<div class="cabin"></div>
|
||
|
|
<div class="cabin"></div>
|
||
|
|
<div class="cabin"></div>
|
||
|
|
<div class="cabin"></div>
|
||
|
|
</div>
|
||
|
|
</body>
|
||
|
|
</html>
|
||
|
|
```
|
||
|
|
|
||
|
|
```css
|
||
|
|
.wheel {
|
||
|
|
border: 2px solid black;
|
||
|
|
border-radius: 50%;
|
||
|
|
margin-left: 50px;
|
||
|
|
position: absolute;
|
||
|
|
height: 55vw;
|
||
|
|
width: 55vw;
|
||
|
|
max-width: 500px;
|
||
|
|
max-height: 500px;
|
||
|
|
}
|
||
|
|
|
||
|
|
.line {
|
||
|
|
background-color: black;
|
||
|
|
width: 50%;
|
||
|
|
height: 2px;
|
||
|
|
position: absolute;
|
||
|
|
top: 50%;
|
||
|
|
left: 50%;
|
||
|
|
transform-origin: 0% 0%;
|
||
|
|
}
|
||
|
|
|
||
|
|
.line:nth-of-type(2) {
|
||
|
|
transform: rotate(60deg);
|
||
|
|
}
|
||
|
|
.line:nth-of-type(3) {
|
||
|
|
transform: rotate(120deg);
|
||
|
|
}
|
||
|
|
.line:nth-of-type(4) {
|
||
|
|
transform: rotate(180deg);
|
||
|
|
}
|
||
|
|
.line:nth-of-type(5) {
|
||
|
|
transform: rotate(240deg);
|
||
|
|
}
|
||
|
|
.line:nth-of-type(6) {
|
||
|
|
transform: rotate(300deg);
|
||
|
|
}
|
||
|
|
|
||
|
|
.cabin {
|
||
|
|
background-color: red;
|
||
|
|
width: 20%;
|
||
|
|
height: 20%;
|
||
|
|
position: absolute;
|
||
|
|
border: 2px solid;
|
||
|
|
transform-origin: 50% 0%;
|
||
|
|
}
|
||
|
|
|
||
|
|
.cabin:nth-of-type(1) {
|
||
|
|
right: -8.5%;
|
||
|
|
top: 50%;
|
||
|
|
}
|
||
|
|
.cabin:nth-of-type(2) {
|
||
|
|
right: 17%;
|
||
|
|
top: 93.5%;
|
||
|
|
}
|
||
|
|
.cabin:nth-of-type(3) {
|
||
|
|
right: 67%;
|
||
|
|
top: 93.5%;
|
||
|
|
}
|
||
|
|
.cabin:nth-of-type(4) {
|
||
|
|
left: -8.5%;
|
||
|
|
top: 50%;
|
||
|
|
}
|
||
|
|
.cabin:nth-of-type(5) {
|
||
|
|
left: 17%;
|
||
|
|
top: 7%;
|
||
|
|
}
|
||
|
|
.cabin:nth-of-type(6) {
|
||
|
|
right: 17%;
|
||
|
|
top: 7%;
|
||
|
|
}
|
||
|
|
|
||
|
|
--fcc-editable-region--
|
||
|
|
|
||
|
|
--fcc-editable-region--
|
||
|
|
```
|