this version will run with npm start, but when attempting to run the built version behind nginx, it appears to have issues
PostCSS Pseudo Class Any Link 
PostCSS Pseudo Class Any Link lets you :any-link pseudo-class in CSS,
following the Selectors specification.
nav :any-link > span {
background-color: yellow;
}
/* becomes */
nav :link > span, nav :visited > span {
background-color: yellow;
}
nav :any-link > span {
background-color: yellow;
}
From the proposal:
The
:any-linkpseudo-class represents an element that acts as the source anchor of a hyperlink. It matches an element if the element would match:linkor:visited.
Usage
Add PostCSS Pseudo Class Any Link to your project:
npm install postcss-pseudo-class-any-link --save-dev
Use PostCSS Pseudo Class Any Link to process your CSS:
const postcssPseudoClassAnyLink = require('postcss-pseudo-class-any-link');
postcssPseudoClassAnyLink.process(YOUR_CSS /*, processOptions, pluginOptions */);
Or use it as a PostCSS plugin:
const postcss = require('postcss');
const postcssPseudoClassAnyLink = require('postcss-pseudo-class-any-link');
postcss([
postcssPseudoClassAnyLink(/* pluginOptions */)
]).process(YOUR_CSS /*, processOptions */);
PostCSS Pseudo Class Any Link runs in all Node environments, with special instructions for:
| Node | PostCSS CLI | Webpack | Create React App | Gulp | Grunt |
|---|
Options
preserve
The preserve option determines whether the original :any-link rule is
preserved. By default, it is preserved.
postcssPseudoClassAnyLink({ preserve: false })
nav :any-link > span {
background-color: yellow;
}
/* becomes */
nav :link > span, nav :visited > span {
background-color: yellow;
}