this version will run with npm start, but when attempting to run the built version behind nginx, it appears to have issues
PostCSS Nesting 
PostCSS Nesting lets you nest style rules inside each other, following the CSS Nesting specification.
a, b {
color: red;
& c, & d {
color: white;
}
}
/* becomes */
a, b {
color: red;
}
a c, a d, b c, b d {
color: white;
}
NOTICE: In a future version of this project, nesting at-rules like @media
may be deprecated, as they are not part of the nesting proposal. In a comment,
a CSSWG member expressed interest in handling nested @media while handling
selector nesting. So deprecating nested at-rules has been temporarily delayed.
Usage
Add PostCSS Nesting to your project:
npm install postcss-nesting --save-dev
Use PostCSS Nesting to process your CSS:
import postcssNesting from 'postcss-nesting';
postcssNesting.process(YOUR_CSS /*, processOptions, pluginOptions */);
Or use it as a PostCSS plugin:
import postcss from 'postcss';
import postcssNesting from 'postcss-nesting';
postcss([
postcssNesting(/* pluginOptions */)
]).process(YOUR_CSS /*, processOptions */);
PostCSS Nesting runs in all Node environments, with special instructions for:
| Node | Webpack | Create React App | Gulp | Grunt |
|---|