You can find all the versions of the cdn at github.io.
<link rel="stylesheet" href="https://minimalistcss.github.io/dist/minimalist.min.css">
Or you can use lite version. Lite version don’t have color options, only gray color available.
<link rel="stylesheet" href="https://minimalistcss.github.io/dist/lite.minimalist.min.css">
Install minimalistcss via npm.
npm i minimalistcss --save-dev
and import into your file
@import "custom";
@import "~minimalistcss/scss/minimalistcss.scss";