postcss-prefix Replace :host elements with a prefix of your choosing Usage const prefix = require('postcss-prefix')const postcss = require('postcss') const css = ` :host { color: blue } .hello { color: black }` const newCss = postcss([ prefix('#hello-world') ]) .process(css) .toString() console.log(newCss)// => #hello-world { color: blue }// => .hello { color: black }` See Also sheetify License MIT