My design system I use for all my sites and apps. I use Tachyons because it allows the greatest flexibility and styling across all my tools.
Node.js: https://nodejs.org/en/download
Gulp: npm install -g gulp
npm install
npm start
Fire it up. It will run a full build and then open the design site in your default browser and watch for changes. Any changes made to src files will auto-reload the page.
Individual files, as well as a bundled CSS and JS files are generated inside the build directory.
Images come from Unsplash: https://unsplash.com
Icons from Carbon: https://carbondesignsystem.com/guidelines/icons/library/
Pictograms from uxwing: https://uxwing.com/