---
id: 6140dc5e13d0c81e7496f182
title: Step 17
challengeType: 0
dashedName: step-17
---
# --description--
You now need to define how your animation should start. To do this, create a `0%` rule within your `@keyframes wheel` rule. The properties you set in this nested selector will apply at the beginning of your animation.
As an example, this would be a `12%` rule:
```css
@keyframes freecodecamp {
12% {
color: green;
}
}
```
# --hints--
Your `@keyframes wheel` rule should have a `0%` selector.
```js
assert(new __helpers.CSSHelp(document).getCSSRules('keyframes')?.[0]?.cssRules?.[0]?.keyText === '0%');
```
# --seed--
## --seed-contents--
```html