font awesome 4.7.0 link code example
Example 1: how to import fontawesome
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
Example 2: fontawesome cdn
gem 'font-awesome-sass'
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
gem 'font-awesome-sass'