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---
id: 6140e0d875ec16262f26432b
title: Step 21
challengeType: 0
dashedName: step-21
---
# --description--
The `animation-iteration-count` property sets how many times your animation should repeat. This can be set to a number, or to `infinite` to indefinitely repeat the animation. Your Ferris wheel should never stop, so set the `.wheel` selector to have an `animation-iteration-count` of `infinite`.
The `animation-timing-function` property sets how the animation should progress over time. There are a few different values for this property, but you want the Ferris wheel animation to run at the same rate from start to finish. Set the `animation-timing-function` to `linear` in your `.wheel` selector.
# --hints--
Your `.wheel` selector should have an `animation-iteration-count` property set to `infinite`.
```js
assert(new __helpers.CSSHelp(document).getStyle('.wheel')?.animationIterationCount === 'infinite');
```
Your `.wheel` selector should have an `animation-timing-function` property set to `linear`.
```js
assert(new __helpers.CSSHelp(document).getStyle('.wheel')?.animationTimingFunction === 'linear');
```
# --seed--
## --seed-contents--
```html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>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
--fcc-editable-region--
.wheel {
border: 2px solid black;
border-radius: 50%;
margin-left: 50px;
position: absolute;
height: 55vw;
width: 55vw;
max-width: 500px;
max-height: 500px;
animation-name: wheel;
animation-duration: 10s;
}
--fcc-editable-region--
.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%;
}
@keyframes wheel {
0% {
transform: rotate(0deg);
}
100% {
transform: rotate(360deg);
}
}
```