link fontawesome Version 5.0.11 live code example

Example 1: font-awsome cdn

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.1/css/all.min.css">

Example 2: font awesome cdn

<link rel="stylesheet" href="path/to/font-awesome/css/font-awesome.min.css">