1. Copy the "Fonts" folder and the CSS file to your website's CSS directory.
2. Include the CSS link in your website's header (`<head>` section). <head> ... <link rel="stylesheet" type="text/css" href="your_website_domain/css_root/flaticon.css"> ... </head>
Applying icon classes directly to HTML elements with "display: inline", such as "<i class="flaticon-airplane49"></i>" or "<span class="flaticon-airplane49"></span>" as shown in the example, quickly infuses your web pages with a professional and consistent visual style.