1. Place the "Fonts" folder and the CSS file into your website's CSS directory.
2. Integrate the CSS link within the <head> section of your website's source code. <head> ... <link rel="stylesheet" type="text/css" href="yourdomain.com/css_root/flaticon.css"> ... </head>
3. Apply icon classes to "display: inline" elements. For example: <i class="flaticon-airplane49"></i> or <span class="flaticon-airplane49"></span>.