---
id: 58a7a6ebf9a6318348e2d5aa
title: Modify Fill Mode of an Animation
challengeType: 0
videoUrl: 'https://scrimba.com/c/cVJDmcE'
forumTopicId: 301064
dashedName: modify-fill-mode-of-an-animation
---
# --description--
That's great, but it doesn't work right yet. Notice how the animation resets after `500ms` has passed, causing the button to revert back to the original color. You want the button to stay highlighted.
This can be done by setting the `animation-fill-mode` property to `forwards`. The `animation-fill-mode` specifies the style applied to an element when the animation has finished. You can set it like so:
```css
animation-fill-mode: forwards;
```
# --instructions--
Set the `animation-fill-mode` property of `button:hover` to `forwards` so the button stays highlighted when a user hovers over it.
# --hints--
`button:hover` should have a `animation-fill-mode` property with a value of `forwards`.
```js
assert(
code.match(
/button\s*?:\s*?hover\s*?{[\s\S]*animation-fill-mode\s*?:\s*?forwards\s*?;[\s\S]*}/gi
) &&
code.match(
/button\s*?:\s*?hover\s*?{[\s\S]*animation-name\s*?:\s*?background-color\s*?;[\s\S]*}/gi
) &&
code.match(
/button\s*?:\s*?hover\s*?{[\s\S]*animation-duration\s*?:\s*?500ms\s*?;[\s\S]*}/gi
)
);
```
# --seed--
## --seed-contents--
```html
```
# --solutions--
```html
```