font bootstrap 4 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: font awesome cdn
/* @import CSS Query */
@import url "https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css";