The following example only shows some hex-like placeholders instead of the correct icons. What might be wrong here, using with spring-boot and thymeleaf?
<html>
<head>
<link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.11.2/css/fontawesome.min.css" rel="stylesheet" type="text/css" />
<link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.11.2/css/regular.min.css" rel="stylesheet" type="text/css" />
</head>
<body>
<i class="fa fa-car"></i>
<i class="fa fa-car" style="font-size:48px;"></i>
<i class="fa fa-car" style="font-size:60px;color:red;"></i>
</body>
</html>
Include stylesheet all.css
<link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.11.2/css/all.css" rel="stylesheet" type="text/css" />