1. Place the "Fonts" folder and the CSS file into your website's CSS directory.
2. Add the CSS file link to the `<head>` section of your website: <head> ... <link rel="stylesheet" type="text/css" href="your_website_domain/css_root/flaticon.css"> ... </head>
3. In your HTML, add the icon class directly to inline elements, for example: <i class="flaticon-football"></i> or <span class="flaticon-football"></span>.