1. Copy the 'Fonts' folder and the CSS file into your website's CSS directory.
2. Link the CSS file in the `<head>` section of your HTML. <head> ... <link rel="stylesheet" type="text/css" href="your_website_domain/css_root/flaticon.css"> ... </head>
3. Use the icon class names where you want to display them, for example: `<i class="flaticon-piggy-bank"></i>` or `<span class="flaticon-piggy-bank"></span>`.