1. Copy the "Fonts" folder and CSS file into your website's CSS directory.
2. Add the CSS link inside your HTML head section: <head> ... <link rel="stylesheet" type="text/css" href="your-domain/css_root/flaticon.css"> ... </head>
3. Use icon classes on inline elements like <i class="flaticon-running"></i> or <span class="flaticon-running"></span> to display the running icon.