fontawesome-free latest version cdn code example
Example 1: fontawesome cdn
<link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.13.0/css/all.min.css" rel="stylesheet">
Example 2: fontawesome cdn
gem 'font-awesome-sass'
<link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.13.0/css/all.min.css" rel="stylesheet">
gem 'font-awesome-sass'