---
date: 2023-09-14
author: ['georges-gomes']
title: Inline critical CSS
---

[jampack](/) has a new option to inline critical CSS.

- Avoids a [FOUC](https://en.wikipedia.org/wiki/Flash_of_unstyled_content) while the stylesheet is remotely downloaded after the html content.
- Improves [CLS](https://web.dev/cls/) score of [Core Web Vitals](https://web.dev/vitals/).

```js
{
  css: {
    inline_critical_css: true,
  }
}
```

See [Inline critical CSS](/features/inline-critical-css/) for more details.

## Released

- `jampack 0.21.0+`
