Partial with the default styles used from the editor in post and pages and other CPT.
You can install the file with bowe easily by typing this command on your terminal:
You only need to include the path of the sass file into your entry point file that is compiled from sass for example:
style.scss
npm install wp.scss --save
@import "./node_modules/wp.scss/wp";
bower install wp.scss
@import "./bower_components/wp.scss/wp";