1. Copy the 'Fonts' folder and the CSS file into your website's CSS directory.
2. Link the CSS file in the header of your website. <head> ... <link rel="stylesheet" type="text/css" href="your_website_domain/css_root/flaticon.css"> ... </head>
3. Apply icon classes to inline elements like `<i>` or `<span>`. Example: `<i class="flaticon-football"></i>` or `<span class="flaticon-football"></span>`.