tpl/site.adp:
<%#-*- mode:html; fill-column:120 -*-%>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="/css/<%::site::style%>.css">
<title><%page::title%> - <%::site::name%></title>
</head>
<body>
<header>
<%site::header%>
</header>
<main>
<%page::content%>
</main>
<footer>
<small>
<%site::footer%>
</small>
</footer>
</body>
</html>