use cdn font awesome icons in html locally code example

Example 1: font awesome icons cdn

To load all styles:

<link rel="stylesheet" href="https://pro.fontawesome.com/releases/v5.10.0/css/all.css" integrity="sha384-AYmEC3Yw5cVb3ZcuHtOA93w35dYTsvhLPVnYs9eStHfGJvOvKxVfELGroGkvsg+p" crossorigin="anonymous"/>

Example 2: font awesome cdn link

<link rel="stylesheet" href="https://pro.fontawesome.com/releases/v5.10.0/css/duotone.css" integrity="sha384-R3QzTxyukP03CMqKFe0ssp5wUvBPEyy9ZspCB+Y01fEjhMwcXixTyeot+S40+AjZ" crossorigin="anonymous"/>
<link rel="stylesheet" href="https://pro.fontawesome.com/releases/v5.10.0/css/fontawesome.css" integrity="sha384-eHoocPgXsiuZh+Yy6+7DsKAerLXyJmu2Hadh4QYyt+8v86geixVYwFqUvMU8X90l" crossorigin="anonymous"/>