enquiry icon font awesome code example

Example 1: fa fa question mark

<i class="fa fa-question-circle" aria-hidden="true"></i>

Example 2: enlazar font awesome

<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.8.1/css/all.css" integrity="sha384-50oBUHEmvpQ+1lW4y57PTFmhCaXp0ML5d60M1M7uH2+nqUivzIebhndOJK28anvf" crossorigin="anonymous">