why my output have no .css file

[idsong]

I done as what i was told; but css-entry-webpack-plugin has none effect;
This is the code:

This is the result:

My node Vesion: 8.7.0
Webpack Version:^3.8.1

[saloni-springct]

I'm getting the same output. There is no css file, but a js file being created.

[Roralee]

I'm not using this in an SPA but a fully rendered static site for a styleguide. I'm not getting any output either: