1. Copy the "Fonts" folder and the CSS file to your website's assets directory.
2. Add the CSS link to the <head> section of your website's source code. <head> ... <link rel="stylesheet" type="text/css" href="your_website_domain/assets/css/flaticon.css"> ... </head>
3. Use icon classes on "display: inline" elements: Usage example: <i class="flaticon-referee-whistle"></i> or <span class="flaticon-cheering"></span>