# @emotion/stylis > A custom build of Stylis `@emotion/stylis` is a version of [Stylis](https://github.com/thysultan/stylis.js) that has been modified slightly to make it smaller. The only Stylis option that can be changed is `prefix`, the rest of the options are already set to the values shown below and cannot be changed. This package also only exports the constructer, so you have to do `new Stylis()` and use the result from that rather than directly calling `Stylis`. The result of that function also cannot be used to create a stylis instance unlike stylis. ```js type Options = { global: false, preserve: false, keyframe: false, semicolon: true, cascade: true, compress: false, prefix: boolean | ((key: string, value: string, context: number) => boolean) } ``` ```jsx import Stylis from '@emotion/stylis' const stylis = new Stylis() stylis('.css-hash', 'display:flex;') // .css-hash{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;} ``` ## Building this package To build this package from a newer version of stylis, update the version of stylis that is installed as a devDependency and run `node build.js` in the directory of this package. This will read the source of stylis, transform it slightly, use the [Google Closure Compiler REST API](https://developers.google.com/closure/compiler/docs/gettingstarted_api) to minify it, format it with Prettier and then write it to `src/stylis.min.js`. # Thanks Stylis was written by [Sultan Tarimo](https://github.com/thysultan). ❤️