1. Copy the 'Fonts' folder and CSS file to your website's CSS folder.
2. Add the CSS link in the head of your website's source code. <head>...<link rel="stylesheet" type="text/css" href="your_website_domain/css_root/flaticon.css">...</head>
3. Use the icon class on inline elements: Example: <i class="flaticon-airplane49"></i> or <span class="flaticon-airplane49"></span>