Copy and install the precompiled files
After downloading, you need to extract the files and copy them into your project directory.
CSS
Copy the .css file to a stylesheets folder in the root of your project's public folder.
For example:
<YOUR-SITE-URL>/stylesheets/fcdo-frontend.min.css
JavaScript
Copy the .js file to a javascripts folder in the root of your project's public folder.
For example:
<YOUR-SITE-URL>/javascripts/fcdo-frontend.min.js