"target": { "type": "id", "val": "tpl_header" } },
                        "./tpl/footer.html": { "type": "html", "target": { "type": "id", "val": "tpl_footer" } }
                    }
                }
            }
        });
    </script>

</head>

<body>
    <div id="tmpui"></div>
    <div id="tmpui_body" class="d-flex flex-column"></div>
</body>

</html>