Upload the 'Fonts' folder and the CSS file to your website's CSS directory.
Link the CSS file in the `<head>` section of your website: <head> ... <link rel="stylesheet" type="text/css" href="yourdomain.com/css_root/flaticon.css"> ... </head>
In your webpage, use inline elements (like `<i>` or `<span>`) and add the appropriate icon class name to display icons. For instance: `<i class="flaticon-game-controller"></i>` or `<span class="flaticon-news-updates"></span>`.