The Reference Element Pseudo-class: :scope
npm install @csstools/postcss-scope-pseudo-classnpm install @csstools/postcss-scope-pseudo-class --save-dev
[PostCSS Scope Pseudo Class] lets you use the :scope Pseudo-class following the [Selectors 4 specification].
``css
:scope {
color: green;
}
/ becomes /
:root {
color: green;
}
`
Add [PostCSS Scope Pseudo Class] to your project:
`bash`
npm install postcss @csstools/postcss-scope-pseudo-class --save-dev
Use it as a [PostCSS] plugin:
`js
const postcss = require('postcss');
const postcssScopePseudoClass = require('@csstools/postcss-scope-pseudo-class');
postcss([
postcssScopePseudoClass(/ pluginOptions /)
]).process(YOUR_CSS /, processOptions /);
`
The preserve option determines whether the original notation
is preserved. By default, it is not preserved.
`js`
postcssScopePseudoClass({ preserve: true })
`css
:scope {
color: green;
}
/ becomes /
:root {
color: green;
}
:scope {
color: green;
}
``
[cli-url]: https://github.com/csstools/postcss-plugins/actions/workflows/test.yml?query=workflow/test
[css-url]: https://cssdb.org/#scope-pseudo-class
[discord]: https://discord.gg/bUadyRwkJS
[npm-url]: https://www.npmjs.com/package/@csstools/postcss-scope-pseudo-class
[PostCSS]: https://github.com/postcss/postcss
[PostCSS Scope Pseudo Class]: https://github.com/csstools/postcss-plugins/tree/main/plugins/postcss-scope-pseudo-class
[Selectors 4 specification]: https://www.w3.org/TR/selectors-4/#the-scope-pseudo